diff --git a/packages/react-chat/src/components/Channels.tsx b/packages/react-chat/src/components/Channels.tsx
index 817f4cc7..77813c63 100644
--- a/packages/react-chat/src/components/Channels.tsx
+++ b/packages/react-chat/src/components/Channels.tsx
@@ -1,18 +1,235 @@
 import React from "react";
 import styled from "styled-components";
 
+import { ChannelData, channels } from "../helpers/channelsMock";
 import { Theme } from "../styles/themes";
 
 interface ChannelsProps {
   theme: Theme;
+  icon: string;
+  name: string;
+  members: number;
+  setActiveChannel: (val: ChannelData) => void;
+  activeChannelId: number;
 }
 
-export function Channels({ theme }: ChannelsProps) {
-  return <ChannelsWrapper theme={theme}>Channels</ChannelsWrapper>;
+export function Channels({
+  theme,
+  icon,
+  name,
+  members,
+  setActiveChannel,
+  activeChannelId,
+}: ChannelsProps) {
+  return (
+    <ChannelsWrapper theme={theme}>
+      <Community>
+        <CommunityLogo src={icon} alt={`${name} logo`} />
+        <CommunityInfo>
+          <CommunityName theme={theme}>{name}</CommunityName>
+          <MembersAmount theme={theme}>{members} members</MembersAmount>
+        </CommunityInfo>
+      </Community>
+      <ChannelList>
+        {channels.map((channel) => (
+          <Channel
+            key={channel.id}
+            channel={channel}
+            theme={theme}
+            isActive={channel.id === activeChannelId}
+            onClick={() => {
+              setActiveChannel(channel);
+            }}
+          />
+        ))}
+      </ChannelList>
+    </ChannelsWrapper>
+  );
 }
 
-const ChannelsWrapper = styled.div<ChannelsProps>`
-  width: 33%;
+interface ChannelProps {
+  theme: Theme;
+  channel: ChannelData;
+  isActive: boolean;
+  activeView?: boolean;
+  onClick?: () => void;
+}
+
+export function Channel({
+  theme,
+  channel,
+  isActive,
+  activeView,
+  onClick,
+}: ChannelProps) {
+  return (
+    <ChannelWrapper
+      className={isActive && !activeView ? "active" : ""}
+      theme={theme}
+      onClick={onClick}
+    >
+      <ChannelInfo>
+        <ChannelLogo
+          style={{
+            backgroundImage: channel.icon ? `url(${channel.icon}` : "",
+          }}
+          className={activeView ? "active" : ""}
+          theme={theme}
+        >
+          {!channel.icon && channel.name.slice(0, 1).toUpperCase()}
+        </ChannelLogo>
+        <ChannelTextInfo>
+          <ChannelName
+            theme={theme}
+            className={
+              isActive ? "active" : channel.notifications ? "notified" : ""
+            }
+          >
+            # {channel.name}
+          </ChannelName>
+          {activeView && (
+            <MembersAmount theme={theme}>
+              {" "}
+              {channel.members} members
+            </MembersAmount>
+          )}
+        </ChannelTextInfo>
+      </ChannelInfo>
+      {channel.notifications && !activeView && (
+        <NotificationBagde theme={theme}>
+          {channel.notifications}
+        </NotificationBagde>
+      )}
+    </ChannelWrapper>
+  );
+}
+interface ThemeProps {
+  theme: Theme;
+}
+
+const ChannelsWrapper = styled.div<ThemeProps>`
+  width: 21%;
   height: 100%;
   background-color: ${({ theme }) => theme.sectionBackgroundColor};
+  padding: 10px 0.6%;
+  display: flex;
+  flex-direction: column;
+`;
+
+const Community = styled.div`
+  display: flex;
+  margin-bottom: 16px;
+`;
+
+const CommunityLogo = styled.img`
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  margin-left: 10px;
+`;
+
+const CommunityInfo = styled.div`
+  display: flex;
+  flex-direction: column;
+  margin-left: 8px;
+`;
+
+const CommunityName = styled.h1<ThemeProps>`
+  font-weight: 500;
+  font-size: 15px;
+  line-height: 22px;
+  color: ${({ theme }) => theme.textPrimaryColor};
+`;
+
+const MembersAmount = styled.p<ThemeProps>`
+  font-size: 12px;
+  line-height: 16px;
+  letter-spacing: 0.1px;
+  color: ${({ theme }) => theme.textSecondaryColor};
+`;
+
+const ChannelList = styled.div`
+  display: flex;
+  flex-direction: column;
+`;
+
+const ChannelWrapper = styled.div<ThemeProps>`
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 8px;
+  cursor: pointer;
+
+  &.active {
+    background-color: ${({ theme }) => theme.activeChannelBackground};
+    border-radius: 8px;
+  }
+`;
+
+const ChannelInfo = styled.div`
+  display: flex;
+  align-items: center;
+`;
+
+const ChannelTextInfo = styled.div`
+  display: flex;
+  flex-direction: column;
+`;
+
+const ChannelLogo = styled.div<ThemeProps>`
+  width: 24px;
+  height: 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin-right: 10px;
+  border-radius: 50%;
+  font-weight: bold;
+  font-size: 15px;
+  line-height: 20px;
+  background-color: ${({ theme }) => theme.iconColor};
+  background-size: cover;
+  background-repeat: no-repeat;
+  color: ${({ theme }) => theme.iconTextColor};
+
+  &.active {
+    width: 36px;
+    height: 36px;
+    font-size: 20px;
+    line-height: 20px;
+  }
+`;
+
+const ChannelName = styled.p<ThemeProps>`
+  color: ${({ theme }) => theme.textPrimaryColor};
+  font-weight: 500;
+  font-size: 15px;
+  line-height: 22px;
+  opacity: 0.7;
+
+  &.active,
+  &.notified {
+    opacity: 1;
+  }
+
+  &.muted {
+    opacity: 0.4;
+  }
+
+  &.notified {
+    font-weight: 600;
+  }
+`;
+
+const NotificationBagde = styled.div<ThemeProps>`
+  width: 24px;
+  height: 24px;
+  border-radius: 50%;
+  font-size: 12px;
+  line-height: 16px;
+  background-color: ${({ theme }) => theme.notificationColor};
+  color: ${({ theme }) => theme.bodyBackgroundColor};
+  display: flex;
+  align-items: center;
+  justify-content: center;
 `;
diff --git a/packages/react-chat/src/components/Chat.tsx b/packages/react-chat/src/components/Chat.tsx
index a58d01ca..3249760f 100644
--- a/packages/react-chat/src/components/Chat.tsx
+++ b/packages/react-chat/src/components/Chat.tsx
@@ -1,6 +1,7 @@
-import React from "react";
+import React, { useState } from "react";
 import styled from "styled-components";
 
+import { ChannelData, channels } from "../helpers/channelsMock";
 import { Theme } from "../styles/themes";
 
 import { Channels } from "./Channels";
@@ -9,16 +10,27 @@ import { Members } from "./Members";
 
 interface ChatProps {
   theme: Theme;
-  channels?: boolean;
-  members?: boolean;
+  channelsON?: boolean;
+  membersON?: boolean;
 }
 
-export function Chat({ theme, channels, members }: ChatProps) {
+export function Chat({ theme, channelsON, membersON }: ChatProps) {
+  const [activeChannel, setActiveChannel] = useState<ChannelData>(channels[0]);
+
   return (
     <ChatWrapper>
-      {channels && <Channels theme={theme} />}
-      <ChatBody />
-      {members && <Members />}
+      {channelsON && (
+        <Channels
+          theme={theme}
+          icon={"https://www.cryptokitties.co/icons/logo.svg"}
+          name={"CryptoKitties"}
+          members={186}
+          setActiveChannel={setActiveChannel}
+          activeChannelId={activeChannel.id}
+        />
+      )}
+      <ChatBody theme={theme} channel={activeChannel} />
+      {membersON && <Members theme={theme} />}
     </ChatWrapper>
   );
 }
diff --git a/packages/react-chat/src/components/Chat/ChatBody.tsx b/packages/react-chat/src/components/Chat/ChatBody.tsx
index 5942c25d..7efb9855 100644
--- a/packages/react-chat/src/components/Chat/ChatBody.tsx
+++ b/packages/react-chat/src/components/Chat/ChatBody.tsx
@@ -1,12 +1,20 @@
 import React, { useCallback, useState } from "react";
 import styled from "styled-components";
 
+import { ChannelData } from "../../helpers/channelsMock";
+import { Theme } from "../../styles/themes";
+import { Channel } from "../Channels";
 import { ChatMessage } from "../models/ChatMessage";
 
 import { ChatInput } from "./ChatInput";
 import { ChatMessages } from "./ChatMessages";
 
-export function ChatBody() {
+interface ChatBodyProps {
+  theme: Theme;
+  channel: ChannelData;
+}
+
+export function ChatBody({ theme, channel }: ChatBodyProps) {
   const [messages, setMessages] = useState<ChatMessage[]>([]);
 
   const addMessage = useCallback(
@@ -20,16 +28,32 @@ export function ChatBody() {
   );
 
   return (
-    <ChatBodyWrapper>
-      <ChatMessages messages={messages} />
-      <ChatInput addMessage={addMessage} />
+    <ChatBodyWrapper theme={theme}>
+      <ChannelWrapper>
+        <Channel
+          channel={channel}
+          theme={theme}
+          isActive={true}
+          activeView={true}
+        />
+      </ChannelWrapper>
+      <ChatMessages messages={messages} theme={theme} />
+      <ChatInput theme={theme} addMessage={addMessage} />
     </ChatBodyWrapper>
   );
 }
+interface ThemeProps {
+  theme: Theme;
+}
 
-const ChatBodyWrapper = styled.div`
+const ChatBodyWrapper = styled.div<ThemeProps>`
+  display: flex;
+  flex-direction: column;
   flex: 1;
   height: 100%;
-  max-width: 50%;
   background: ${({ theme }) => theme.bodyBackgroundColor};
 `;
+
+const ChannelWrapper = styled.div`
+  padding-left: 8px;
+`;
diff --git a/packages/react-chat/src/components/Chat/ChatInput.tsx b/packages/react-chat/src/components/Chat/ChatInput.tsx
index cbce3569..2355e0a7 100644
--- a/packages/react-chat/src/components/Chat/ChatInput.tsx
+++ b/packages/react-chat/src/components/Chat/ChatInput.tsx
@@ -1,41 +1,56 @@
 import React, { useState } from "react";
 import styled from "styled-components";
 
+import { Theme } from "../../styles/themes";
+
 type ChatInputProps = {
+  theme: Theme;
   addMessage: (message: string) => void;
 };
 
-export function ChatInput({ addMessage }: ChatInputProps) {
+export function ChatInput({ theme, addMessage }: ChatInputProps) {
   const [content, setContent] = useState("");
 
   return (
-    <Input
-      placeholder={"Message"}
-      value={content}
-      onChange={(e) => setContent(e.target.value)}
-      onKeyPress={(e) => {
-        if (e.key == "Enter") {
-          addMessage(content);
-          setContent("");
-        }
-      }}
-    />
+    <InputWrapper>
+      <Input
+        theme={theme}
+        placeholder={"Message"}
+        value={content}
+        onChange={(e) => setContent(e.target.value)}
+        onKeyPress={(e) => {
+          if (e.key == "Enter") {
+            addMessage(content);
+            setContent("");
+          }
+        }}
+      />
+    </InputWrapper>
   );
 }
 
-const Input = styled.input`
+interface ThemeProps {
+  theme: Theme;
+}
+
+const InputWrapper = styled.div`
+  display: flex;
+  padding: 6px 8px 6px 10px;
+`;
+const Input = styled.input<ThemeProps>`
   width: 100%;
-  margin-left: 8px;
-  margin-right: 8px;
-  margin-bottom: 4px;
+  margin-left: 10px;
   height: 40px;
-  background: #eef2f5;
+  background: ${({ theme }) => theme.inputColor};
   border-radius: 36px 16px 4px 36px;
-  border: 0px;
+  border: 1px solid ${({ theme }) => theme.inputColor};
   padding-left: 12px;
   outline: none;
+  font-size: 15px;
+  line-height: 22px;
 
   &:focus {
-    border: 1px solid grey;
+    outline: none;
+    caret-color: ${({ theme }) => theme.notificationColor};
   }
 `;
diff --git a/packages/react-chat/src/components/Chat/ChatMessages.tsx b/packages/react-chat/src/components/Chat/ChatMessages.tsx
index e9d383e6..c03601a9 100644
--- a/packages/react-chat/src/components/Chat/ChatMessages.tsx
+++ b/packages/react-chat/src/components/Chat/ChatMessages.tsx
@@ -1,13 +1,15 @@
 import React, { useEffect, useRef } from "react";
 import styled from "styled-components";
 
+import { Theme } from "../../styles/themes";
 import { ChatMessage } from "../models/ChatMessage";
 
 type ChatMessagesProps = {
   messages: ChatMessage[];
+  theme: Theme;
 };
 
-export function ChatMessages({ messages }: ChatMessagesProps) {
+export function ChatMessages({ messages, theme }: ChatMessagesProps) {
   const ref = useRef<HTMLHeadingElement>(null);
   useEffect(() => {
     if (ref && ref.current) {
@@ -19,15 +21,15 @@ export function ChatMessages({ messages }: ChatMessagesProps) {
     <MessagesWrapper ref={ref}>
       {messages.map((message) => (
         <MessageWrapper key={message.date.toDateString()}>
-          <IconWrapper>
-            <Icon />
-          </IconWrapper>
+          <Icon />
           <ContentWrapper>
             <MessageHeaderWrapper>
-              <UserNameWrapper>{message.sender}</UserNameWrapper>
-              <TimeWrapper>{message.date.toLocaleTimeString()}</TimeWrapper>
+              <UserNameWrapper theme={theme}>{message.sender}</UserNameWrapper>
+              <TimeWrapper theme={theme}>
+                {message.date.toLocaleTimeString()}
+              </TimeWrapper>
             </MessageHeaderWrapper>
-            <MessageText>{message.content}</MessageText>
+            <MessageText theme={theme}>{message.content}</MessageText>
           </ContentWrapper>
         </MessageWrapper>
       ))}
@@ -35,64 +37,59 @@ export function ChatMessages({ messages }: ChatMessagesProps) {
   );
 }
 
-const MessageText = styled.div`
-  overflow-wrap: anywhere;
+interface ThemeProps {
+  theme: Theme;
+}
+
+const MessagesWrapper = styled.div`
+  height: calc(100% - 44px);
+  overflow: auto;
+  padding: 8px 16px 0;
+`;
+
+const MessageWrapper = styled.div`
   width: 100%;
-`;
-
-const MessageHeaderWrapper = styled.div`
   display: flex;
-`;
-
-const TimeWrapper = styled.div`
-  font-family: Inter;
-  font-style: normal;
-  font-weight: normal;
-  font-size: 10px;
-  line-height: 14px;
-  letter-spacing: 0.2px;
-  text-transform: uppercase;
-  color: #939ba1;
-
-  text-align: center;
-  margin-top: auto;
-  margin-bottom: auto;
-  margin-left: 4px;
-`;
-
-const UserNameWrapper = styled.div`
-  font-family: Inter;
-  font-style: normal;
-  font-weight: 500;
-  font-size: 15px;
-  line-height: 22px;
+  align-items: center;
+  padding: 8px 0;
+  margin-bottom: 8px;
 `;
 
 const ContentWrapper = styled.div`
   display: flex;
   flex-direction: column;
+  margin-left: 8px;
+`;
+
+const MessageHeaderWrapper = styled.div`
+  display: flex;
+  align-items: center;
 `;
 
 const Icon = styled.div`
   width: 40px;
   height: 40px;
   border-radius: 50%;
-  background-color: blue;
+  background-color: #bcbdff;
 `;
 
-const IconWrapper = styled.div`
-  margin-left: 16px;
-  margin-right: 8px;
+const UserNameWrapper = styled.div<ThemeProps>`
+  font-size: 15px;
+  line-height: 22px;
+  color: ${({ theme }) => theme.memberNameColor};
 `;
 
-const MessageWrapper = styled.div`
+const TimeWrapper = styled.div<ThemeProps>`
+  font-size: 10px;
+  line-height: 14px;
+  letter-spacing: 0.2px;
+  text-transform: uppercase;
+  color: ${({ theme }) => theme.textSecondaryColor};
+  margin-left: 4px;
+`;
+
+const MessageText = styled.div<ThemeProps>`
+  overflow-wrap: anywhere;
   width: 100%;
-  display: flex;
-  margin-top: 8px;
-  margin-bottom: 8px;
-`;
-
-const MessagesWrapper = styled.div`
-  height: calc(100% - 44px);
-  overflow: auto;
+  color: ${({ theme }) => theme.textPrimaryColor};
 `;
diff --git a/packages/react-chat/src/components/Members.tsx b/packages/react-chat/src/components/Members.tsx
index 9c6e9aab..758a7edd 100644
--- a/packages/react-chat/src/components/Members.tsx
+++ b/packages/react-chat/src/components/Members.tsx
@@ -1,12 +1,18 @@
 import React from "react";
 import styled from "styled-components";
 
-export function Members() {
-  return <MembersWrapper></MembersWrapper>;
+import { Theme } from "../styles/themes";
+
+interface MembersProps {
+  theme: Theme;
 }
 
-const MembersWrapper = styled.div`
-  width: 33%;
+export function Members({ theme }: MembersProps) {
+  return <MembersWrapper theme={theme}>Members</MembersWrapper>;
+}
+
+const MembersWrapper = styled.div<MembersProps>`
+  width: 18%;
   height: 100%;
   background-color: ${({ theme }) => theme.sectionBackgroundColor};
 `;
diff --git a/packages/react-chat/src/components/ReactChat.tsx b/packages/react-chat/src/components/ReactChat.tsx
index d9d25d38..1d68426c 100644
--- a/packages/react-chat/src/components/ReactChat.tsx
+++ b/packages/react-chat/src/components/ReactChat.tsx
@@ -9,7 +9,7 @@ export function ReactChat() {
   return (
     <div>
       <GlobalStyle />
-      <Chat channels={true} members={true} theme={lightTheme} />
+      <Chat channelsON={true} membersON={true} theme={lightTheme} />
     </div>
   );
 }
diff --git a/packages/react-chat/src/helpers/channelsMock.ts b/packages/react-chat/src/helpers/channelsMock.ts
new file mode 100644
index 00000000..c0f50701
--- /dev/null
+++ b/packages/react-chat/src/helpers/channelsMock.ts
@@ -0,0 +1,32 @@
+export type ChannelData = {
+  id: number;
+  name: string;
+  icon?: string;
+  members: number;
+  notifications?: number;
+};
+
+export const channels = [
+  {
+    id: 1,
+    name: "welcome",
+    icon: "https://www.cryptokitties.co/icons/logo.svg",
+    members: 7,
+  },
+  {
+    id: 2,
+    name: "general",
+    members: 15,
+  },
+  {
+    id: 3,
+    name: "beginners",
+    members: 3,
+    notifications: 1,
+  },
+  {
+    id: 4,
+    name: "random",
+    members: 6,
+  },
+];
diff --git a/packages/react-chat/src/styles/themes.ts b/packages/react-chat/src/styles/themes.ts
index ad3b5505..ee83d793 100644
--- a/packages/react-chat/src/styles/themes.ts
+++ b/packages/react-chat/src/styles/themes.ts
@@ -5,7 +5,11 @@ export type Theme = {
   sectionBackgroundColor: string;
   memberNameColor: string;
   guestNameColor: string;
+  iconColor: string;
+  iconTextColor: string;
+  activeChannelBackground: string;
   notificationColor: string;
+  inputColor: string;
 };
 
 export const lightTheme: Theme = {
@@ -15,7 +19,11 @@ export const lightTheme: Theme = {
   sectionBackgroundColor: "#F6F8FA",
   memberNameColor: "#4360DF",
   guestNameColor: "#887AF9",
+  iconColor: "#D37EF4",
+  iconTextColor: "rgba(255, 255, 255, 0.7)",
+  activeChannelBackground: "#E9EDF1",
   notificationColor: "#4360DF",
+  inputColor: "#EEF2F5",
 };
 
 export const darkTheme: Theme = {
@@ -25,7 +33,11 @@ export const darkTheme: Theme = {
   sectionBackgroundColor: "#252525",
   memberNameColor: "#88B0FF",
   guestNameColor: "#887AF9",
+  iconColor: "#D37EF4",
+  iconTextColor: "rgba(0, 0, 0, 0.7)",
+  activeChannelBackground: "#2C2C2C",
   notificationColor: "#887AF9",
+  inputColor: "#373737",
 };
 
 export default { lightTheme, darkTheme };