diff --git a/On_off_iOS/On_off_iOS.xcodeproj/project.pbxproj b/On_off_iOS/On_off_iOS.xcodeproj/project.pbxproj
index 36c6484..886c302 100644
--- a/On_off_iOS/On_off_iOS.xcodeproj/project.pbxproj
+++ b/On_off_iOS/On_off_iOS.xcodeproj/project.pbxproj
@@ -7,6 +7,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		355283122B68CB70002BBFFD /* Ext + UIFont.swift in Sources */ = {isa = PBXBuildFile; fileRef = 355283112B68CB70002BBFFD /* Ext + UIFont.swift */; };
+		355283142B68CC94002BBFFD /* Ext + UIColor.swift in Sources */ = {isa = PBXBuildFile; fileRef = 355283132B68CC94002BBFFD /* Ext + UIColor.swift */; };
 		3584F3AC2B5A5CC7007ACB57 /* (null) in Sources */ = {isa = PBXBuildFile; };
 		3584F3AE2B5A5FEB007ACB57 /* (null) in Sources */ = {isa = PBXBuildFile; };
 		35AC0F502B64025300AB0A6B /* TabItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = 35AC0F4F2B64025300AB0A6B /* TabItem.swift */; };
@@ -58,8 +60,19 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		355283112B68CB70002BBFFD /* Ext + UIFont.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Ext + UIFont.swift"; sourceTree = "<group>"; };
+		355283132B68CC94002BBFFD /* Ext + UIColor.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Ext + UIColor.swift"; sourceTree = "<group>"; };
 		35AC0F4F2B64025300AB0A6B /* TabItem.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabItem.swift; sourceTree = "<group>"; };
 		35AC0F512B64030400AB0A6B /* TabBarController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TabBarController.swift; sourceTree = "<group>"; };
+		35E0C7292B68C7E3006BF427 /* Pretendard-Bold.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Bold.otf"; sourceTree = "<group>"; };
+		35E0C72A2B68C7E3006BF427 /* Pretendard-ExtraBold.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-ExtraBold.otf"; sourceTree = "<group>"; };
+		35E0C72B2B68C7E3006BF427 /* Pretendard-ExtraLight.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-ExtraLight.otf"; sourceTree = "<group>"; };
+		35E0C72C2B68C7E3006BF427 /* Pretendard-Black.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Black.otf"; sourceTree = "<group>"; };
+		35E0C72D2B68C7E3006BF427 /* Pretendard-Light.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Light.otf"; sourceTree = "<group>"; };
+		35E0C72E2B68C7E3006BF427 /* Pretendard-Regular.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Regular.otf"; sourceTree = "<group>"; };
+		35E0C72F2B68C7E3006BF427 /* Pretendard-Thin.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Thin.otf"; sourceTree = "<group>"; };
+		35E0C7302B68C7E3006BF427 /* Pretendard-SemiBold.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-SemiBold.otf"; sourceTree = "<group>"; };
+		35E0C7312B68C7E3006BF427 /* Pretendard-Medium.otf */ = {isa = PBXFileReference; lastKnownFileType = file; path = "Pretendard-Medium.otf"; sourceTree = "<group>"; };
 		374FD49C2B4281E100F2E645 /* OnboardingCustomView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OnboardingCustomView.swift; sourceTree = "<group>"; };
 		374FD49E2B42825B00F2E645 /* CustomPageControl.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CustomPageControl.swift; sourceTree = "<group>"; };
 		374FD4A12B4294F100F2E645 /* LoginViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LoginViewController.swift; sourceTree = "<group>"; };
@@ -144,6 +157,22 @@
 			path = View;
 			sourceTree = "<group>";
 		};
+		35E0C7282B68C7AC006BF427 /* Fonts */ = {
+			isa = PBXGroup;
+			children = (
+				35E0C72C2B68C7E3006BF427 /* Pretendard-Black.otf */,
+				35E0C7292B68C7E3006BF427 /* Pretendard-Bold.otf */,
+				35E0C72A2B68C7E3006BF427 /* Pretendard-ExtraBold.otf */,
+				35E0C72B2B68C7E3006BF427 /* Pretendard-ExtraLight.otf */,
+				35E0C72D2B68C7E3006BF427 /* Pretendard-Light.otf */,
+				35E0C7312B68C7E3006BF427 /* Pretendard-Medium.otf */,
+				35E0C72E2B68C7E3006BF427 /* Pretendard-Regular.otf */,
+				35E0C7302B68C7E3006BF427 /* Pretendard-SemiBold.otf */,
+				35E0C72F2B68C7E3006BF427 /* Pretendard-Thin.otf */,
+			);
+			path = Fonts;
+			sourceTree = "<group>";
+		};
 		374FD49B2B4281CA00F2E645 /* OnBoarding */ = {
 			isa = PBXGroup;
 			children = (
@@ -321,6 +350,8 @@
 			children = (
 				3B0129C52B6242F800B191AD /* Ext + ViewController.swift */,
 				3B0129C72B6246E900B191AD /* Ext + UIImage.swift */,
+				355283112B68CB70002BBFFD /* Ext + UIFont.swift */,
+				355283132B68CC94002BBFFD /* Ext + UIColor.swift */,
 			);
 			path = Extension;
 			sourceTree = "<group>";
@@ -392,6 +423,7 @@
 				376A4B552B5504AB004FBB56 /* Assets */,
 				3B51B5252B63DF8000E5FEF9 /* Constant */,
 				3B0129C42B6242D400B191AD /* Extension */,
+				35E0C7282B68C7AC006BF427 /* Fonts */,
 				3B4230182B41572400D0B038 /* LaunchScreen.storyboard */,
 				3B42301B2B41572400D0B038 /* Info.plist */,
 			);
@@ -547,6 +579,8 @@
 				3787D00F2B42AD6F00F054DD /* OnBoardingViewModel.swift in Sources */,
 				374FD4A22B4294F100F2E645 /* LoginViewController.swift in Sources */,
 				374FD49F2B42825B00F2E645 /* CustomPageControl.swift in Sources */,
+				355283122B68CB70002BBFFD /* Ext + UIFont.swift in Sources */,
+				355283142B68CC94002BBFFD /* Ext + UIColor.swift in Sources */,
 				3769A6862B58563000D79C33 /* SelectTimeViewModel.swift in Sources */,
 				374FD4A42B4297BE00F2E645 /* OnBoardingViewController.swift in Sources */,
 				3769A6882B58563C00D79C33 /* SelectTimeViewController.swift in Sources */,
diff --git a/On_off_iOS/On_off_iOS/Extension/Ext + UIColor.swift b/On_off_iOS/On_off_iOS/Extension/Ext + UIColor.swift
new file mode 100644
index 0000000..d726235
--- /dev/null
+++ b/On_off_iOS/On_off_iOS/Extension/Ext + UIColor.swift	
@@ -0,0 +1,49 @@
+//
+//  Ext + UIColor.swift
+//  On_off_iOS
+//
+//  Created by 신예진 on 1/30/24.
+//
+
+import Foundation
+import UIKit
+
+extension UIColor {
+    convenience init(hex: String) {
+        let scanner = Scanner(string: hex)
+        _ = scanner.scanString("#")
+        
+        var rgb: UInt64 = 0
+        scanner.scanHexInt64(&rgb)
+        
+        let r = CGFloat((rgb >> 16) & 0xFF) / 255.0
+        let g = CGFloat((rgb >>  8) & 0xFF) / 255.0
+        let b = CGFloat((rgb >>  0) & 0xFF) / 255.0
+        self.init(red: r, green: g, blue: b, alpha: 1.0)
+    }
+    
+    static func colorFromString(_ string: String) -> UIColor {
+        switch string.uppercased() {
+        case "YELLOW":
+            return UIColor.OnOffYellow
+        case "PURPLE":
+            return UIColor.OnOffPurple
+        case "BLACK":
+            return UIColor.black
+        case "WHITE":
+            return UIColor.white
+        default:
+            return .clear
+        }
+    }
+}
+
+extension UIColor {
+    static let OnOffMain = UIColor(hex: "7D4BFF") // OnOff 메인컬러
+    static let OnOffYellow = UIColor(hex: "#FFD572") //StatisticsView 그래프 컬러
+    static let OnOffPurple = UIColor(hex: "#7D4BFF")
+    static var OnOffLightPurple: UIColor { //날짜 선택 안되었을 때의 컬러
+        return OnOffPurple.withAlphaComponent(0.3)
+    }
+}
+
diff --git a/On_off_iOS/On_off_iOS/Extension/Ext + UIFont.swift b/On_off_iOS/On_off_iOS/Extension/Ext + UIFont.swift
new file mode 100644
index 0000000..ab78cbb
--- /dev/null
+++ b/On_off_iOS/On_off_iOS/Extension/Ext + UIFont.swift	
@@ -0,0 +1,41 @@
+//
+//  Ext + Font.swift
+//  On_off_iOS
+//
+//  Created by 신예진 on 1/30/24.
+//
+
+import Foundation
+import UIKit
+
+extension UIFont {
+    static func pretendard(size fontSize: CGFloat, weight: UIFont.Weight) -> UIFont {
+        let familyName = "Pretendard"
+
+        var weightString: String
+        switch weight {
+        case .black:
+            weightString = "Black"
+        case .bold:
+            weightString = "Blod"
+        case .heavy:
+            weightString = "ExtraBold"
+        case .ultraLight:
+            weightString = "ExtraLight"
+        case .light:
+            weightString = "Light"
+        case .medium:
+            weightString = "Medium"
+        case .regular:
+            weightString = "Regular"
+        case .semibold:
+            weightString = "SemiBold"
+        case .thin:
+            weightString = "Thin"
+        default:
+            weightString = "Regular"
+        }
+
+        return UIFont(name: "\(familyName)-\(weightString)", size: fontSize) ?? .systemFont(ofSize: fontSize, weight: weight)
+    }
+}
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Black.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Black.otf
new file mode 100644
index 0000000..a0d849e
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Black.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Bold.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Bold.otf
new file mode 100644
index 0000000..8e5e30a
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Bold.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraBold.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraBold.otf
new file mode 100644
index 0000000..388f3ca
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraBold.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraLight.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraLight.otf
new file mode 100644
index 0000000..40c8b69
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-ExtraLight.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Light.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Light.otf
new file mode 100644
index 0000000..228679e
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Light.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Medium.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Medium.otf
new file mode 100644
index 0000000..0575069
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Medium.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Regular.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Regular.otf
new file mode 100644
index 0000000..08bf4cf
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Regular.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-SemiBold.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-SemiBold.otf
new file mode 100644
index 0000000..e7e36ab
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-SemiBold.otf differ
diff --git a/On_off_iOS/On_off_iOS/Fonts/Pretendard-Thin.otf b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Thin.otf
new file mode 100644
index 0000000..77e792d
Binary files /dev/null and b/On_off_iOS/On_off_iOS/Fonts/Pretendard-Thin.otf differ
diff --git a/On_off_iOS/On_off_iOS/Info.plist b/On_off_iOS/On_off_iOS/Info.plist
index 0eb786d..54a3c5e 100644
--- a/On_off_iOS/On_off_iOS/Info.plist
+++ b/On_off_iOS/On_off_iOS/Info.plist
@@ -2,6 +2,18 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>UIAppFonts</key>
+	<array>
+		<string>Pretendard-Black.otf</string>
+		<string>Pretendard-Bold.otf</string>
+		<string>Pretendard-ExtraBold.otf</string>
+		<string>Pretendard-ExtraLight.otf</string>
+		<string>Pretendard-Light.otf</string>
+		<string>Pretendard-Medium.otf</string>
+		<string>Pretendard-Regular.otf</string>
+		<string>Pretendard-SemiBold.otf</string>
+		<string>Pretendard-Thin.otf</string>
+	</array>
 	<key>UIApplicationSceneManifest</key>
 	<dict>
 		<key>UIApplicationSupportsMultipleScenes</key>