#3F429F

#3F429F

Color Values

HEX

#3F429F

RGB

63, 66, 159

HSL

238,1, 43,2%, 43,5%

HSV

238,1, 60,4%, 62,4%

CMYK

60,4%, 58,5%, 0,0%, 37,6%

OKLCH

0,4319 0,1478 276,9

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#3F429F

#9F9C3F

Analogous

#3F729F

#6C3F9F

#3F429F

Triadic

#3F429F

#9F3F42

#429F3F

Split Complementary

#3F429F

#9F6C3F

#729F3F

Tetradic

#3F429F

#9F3F72

#9F9C3F

#3F9F6C

Color Blindness Simulation

Original

#3F429F

Protanopia

#404089

Deuteranopia

#404083

Tritanopia

#3F7773

Achromatopsia

#484848

CSS Usage

background-color: #3F429F;
color: #3F429F;
border-color: #3F429F;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CCCDEB
300
#A7A9DC
400
#787AC9
500
#484CB7
600
#3A3D92
700
#2E3175
800
#24265B
900
#1E1F43
950
#13132A

Contrast Checker

Text on white

8,43:1

AA Pass AAA Pass

Text on black

2,49:1

AA Fail AAA Fail

Related Articles

Tutorials

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

Oca 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Oca 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Oca 15, 2026