#3F3FB7

#3F3FB7

Color Values

HEX

#3F3FB7

RGB

63, 63, 183

HSL

240.0, 48.8%, 48.2%

HSV

240.0, 65.6%, 71.8%

CMYK

65.6%, 65.6%, 0.0%, 28.2%

OKLCH

0.447 0.184 276.0

Properties

Cool Dark Nearest: slateblue 3

Color Harmonies

Complementary

#3F3FB7

#B7B73F

Analogous

#3F7BB7

#7B3FB7

#3F3FB7

Triadic

#3F3FB7

#B73F3F

#3FB73F

Split Complementary

#3F3FB7

#B77B3F

#7BB73F

Tetradic

#3F3FB7

#B73F7B

#B7B73F

#3FB77B

Color Blindness Simulation

Original

#3F3FB7

Protanopia

#3F3F9A

Deuteranopia

#3F3F93

Tritanopia

#3F837E

Achromatopsia

#484848

CSS Usage

background-color: #3F3FB7;
color: #3F3FB7;
border-color: #3F3FB7;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F4F4FB
100
#E6E6F5
200
#CACAED
300
#A4A4E0
400
#7373CF
500
#4141BE
600
#343498
700
#2A2A79
800
#21215F
900
#1B1B46
950
#11112C

Contrast Checker

Text on white

8.06:1

AA Pass AAA Pass

Text on black

2.61:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026