#3F3E9B

#3F3E9B

Color Values

HEX

#3F3E9B

RGB

63, 62, 155

HSL

240.6, 42.9%, 42.5%

HSV

240.6, 60.0%, 60.8%

CMYK

59.4%, 60.0%, 0.0%, 39.2%

OKLCH

0.4212 0.1475 278.5

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#3F3E9B

#9A9B3E

Analogous

#3E6B9B

#6D3E9B

#3F3E9B

Triadic

#3F3E9B

#9B3F3E

#3E9B3F

Split Complementary

#3F3E9B

#9B6D3E

#6B9B3E

Tetradic

#3F3E9B

#9B3E6B

#9A9B3E

#3E9B6D

Color Blindness Simulation

Original

#3F3E9B

Protanopia

#3F3F85

Deuteranopia

#3F3F7F

Tritanopia

#3F736F

Achromatopsia

#454545

CSS Usage

background-color: #3F3E9B;
color: #3F3E9B;
border-color: #3F3E9B;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CCCCEB
300
#A8A8DC
400
#7978C9
500
#4A49B6
600
#3B3A92
700
#2F2F75
800
#25245B
900
#1E1E43
950
#13132A

Contrast Checker

Text on white

8.85:1

AA Pass AAA Pass

Text on black

2.37:1

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