diff --git a/src/main/java/com/codingwasabi/howtodo/web/calendar/CalendarController.java b/src/main/java/com/codingwasabi/howtodo/web/calendar/CalendarController.java
index 05e8a9b..48c5669 100644
--- a/src/main/java/com/codingwasabi/howtodo/web/calendar/CalendarController.java
+++ b/src/main/java/com/codingwasabi/howtodo/web/calendar/CalendarController.java
@@ -22,6 +22,7 @@
 import com.codingwasabi.howtodo.web.calendar.dto.CreateCalendarRequest;
 import com.codingwasabi.howtodo.web.calendar.entity.Calendar;
 import com.codingwasabi.howtodo.web.calendar.service.CalendarService;
+import com.codingwasabi.howtodo.web.exam.ExamService;
 import com.codingwasabi.howtodo.web.exam.entity.Exam;
 import com.codingwasabi.howtodo.web.policy.tendency.TendencyPolicy;
 
@@ -33,6 +34,7 @@
 public class CalendarController {
 	private final CalendarService calendarService;
 	private final AccountService accountService;
+	private final ExamService examService;
 	private final TendencyPolicy tendencyPolicy;
 
 	@PostMapping(value = "/calendar", consumes = APPLICATION_JSON_VALUE, produces = APPLICATION_JSON_VALUE)
@@ -40,6 +42,7 @@ public ResponseEntity<CalendarResponse> createCalendar(@LoginAccount Account acc
 														   @RequestBody CreateCalendarRequest createCalendarRequest) {
 
 		List<Exam> exams = extractExams(account, createCalendarRequest);
+		examService.insertColor(exams);
 
 		int tendency = tendencyPolicy.setUp(createCalendarRequest.getAnswers(),
 											createCalendarRequest.getDailyQuota(),
diff --git a/src/main/java/com/codingwasabi/howtodo/web/exam/ExamController.java b/src/main/java/com/codingwasabi/howtodo/web/exam/ExamController.java
index bd3e001..75b83cd 100644
--- a/src/main/java/com/codingwasabi/howtodo/web/exam/ExamController.java
+++ b/src/main/java/com/codingwasabi/howtodo/web/exam/ExamController.java
@@ -24,7 +24,6 @@
 @RestController
 @RequiredArgsConstructor
 public class ExamController {
-	
 	private final ExamService examService;
 	
 	@GetMapping("/my/exams")
@@ -39,20 +38,16 @@ public GetMyExamResponse getMyExam(@LoginAccount Account account) {
 	@PutMapping("/my/exams")
 	public void putMyExam(@LoginAccount Account account, @RequestBody PutMyExamRequest putMyExamRequest) {
 		List<Exam> exams = new ArrayList<>();
-		int index = 0;
 		for (PutMyExamRequest.ExamRequest subjectRequest : putMyExamRequest.getSubjects()) {
 			exams.add(Exam.builder()
 						  .account(account)
 						  .name(subjectRequest.getName())
 						  .dueDateTime(subjectRequest.getDate())
 						  .studyDegree(subjectRequest.getPrepareTime())
-						  .color(++index)
 						  .build());
 		}
-		
+		examService.insertColor(exams);
 		examService.putExam(account, exams);
-		
-		return;
 	}
 	
 }
diff --git a/src/main/java/com/codingwasabi/howtodo/web/exam/ExamService.java b/src/main/java/com/codingwasabi/howtodo/web/exam/ExamService.java
index f86f50e..9e86283 100644
--- a/src/main/java/com/codingwasabi/howtodo/web/exam/ExamService.java
+++ b/src/main/java/com/codingwasabi/howtodo/web/exam/ExamService.java
@@ -14,15 +14,22 @@
 @Service
 @RequiredArgsConstructor
 public class ExamService {
-	
+
 	private final ExamRepository examRepository;
-	
+
 	public List<Exam> getMyExam(Account account) {
 		return examRepository.findByAccount(account);
 	}
-	
+
 	public void putExam(Account account, List<Exam> exam) {
 		examRepository.deleteAll(examRepository.findByAccount(account));
 		examRepository.saveAll(exam);
 	}
+
+	public void insertColor(List<Exam> exams) {
+		int color = 0;
+		for (Exam exam : exams) {
+			exam.setColor(color++);
+		}
+	}
 }
diff --git a/src/main/java/com/codingwasabi/howtodo/web/exam/entity/Exam.java b/src/main/java/com/codingwasabi/howtodo/web/exam/entity/Exam.java
index 232b33f..fc0caa4 100644
--- a/src/main/java/com/codingwasabi/howtodo/web/exam/entity/Exam.java
+++ b/src/main/java/com/codingwasabi/howtodo/web/exam/entity/Exam.java
@@ -15,6 +15,7 @@
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import lombok.Setter;
 
 @Entity
 @Getter
@@ -30,15 +31,16 @@ public class Exam {
 	private String name;
 	private LocalDateTime dueDateTime;
 	private int studyDegree;
+
+	@Setter
 	private int color;
 
 	@Builder
-	private Exam(Account account, String name, LocalDateTime dueDateTime, int studyDegree, int color) {
+	private Exam(Account account, String name, LocalDateTime dueDateTime, int studyDegree) {
 		this.account = account;
 		this.name = name;
 		this.dueDateTime = dueDateTime;
 		this.studyDegree = studyDegree;
-		this.color = color;
 	}
 
 	public int getDDay(LocalDate today) {
diff --git a/src/test/java/com/codingwasabi/howtodo/unit/domain/exam/ExamTest.java b/src/test/java/com/codingwasabi/howtodo/unit/domain/exam/ExamTest.java
index 55e94be..72cabc2 100644
--- a/src/test/java/com/codingwasabi/howtodo/unit/domain/exam/ExamTest.java
+++ b/src/test/java/com/codingwasabi/howtodo/unit/domain/exam/ExamTest.java
@@ -32,13 +32,11 @@ void init() {
 						.account(account)
 						.dueDateTime(LocalDateTime.now())
 						.studyDegree(3)
-						.color(3)
 						.build();
 
 		// then
 		assertThat(exam.getName()).isEqualTo("과목");
 		assertThat(exam.getStudyDegree()).isEqualTo(3);
-		assertThat(exam.getColor()).isEqualTo(3);
 	}
 
 	@DisplayName("과목 d-day 구하기")
diff --git a/src/test/java/com/codingwasabi/howtodo/unit/service/calender/CalendarServiceTest.java b/src/test/java/com/codingwasabi/howtodo/unit/service/calender/CalendarServiceTest.java
index 8b6b349..2473520 100644
--- a/src/test/java/com/codingwasabi/howtodo/unit/service/calender/CalendarServiceTest.java
+++ b/src/test/java/com/codingwasabi/howtodo/unit/service/calender/CalendarServiceTest.java
@@ -38,7 +38,8 @@ void init() {
 		Account account = Account.Anonymous;
 		List<DailyPlan> dailyPlans = List.of(DailyPlan_생성(account), DailyPlan_생성(account));
 		willReturn(dailyPlans).given(planMakingPolicy)
-							  .makeDailyPlans(any(), any(), any(), any());
+							  .makeDailyPlans(any(), any(), any(), any(Integer.class));
+
 		// when
 		Calendar calendar = calendarService.create(account, 3, "daehwan", 10, List.of(Exam_생성("물리", 2022, 4, 9)));
 		// then
@@ -54,7 +55,7 @@ void init() {
 		Account account = Account_생성();
 		List<DailyPlan> dailyPlans = List.of(DailyPlan_생성(account), DailyPlan_생성(account));
 		willReturn(dailyPlans).given(planMakingPolicy)
-							  .makeDailyPlans(any(), any(), any(), any());
+							  .makeDailyPlans(any(), any(), any(), any(Integer.class));
 
 		// when
 		Calendar calendar = calendarService.create(account, 3, "daehwan", 10, List.of(Exam_생성("물리", 2022, 4, 9)));