#231F68

#231F68

Color Values

HEX

#231F68

RGB

35, 31, 104

HSL

243.3, 54.1%, 26.5%

HSV

243.3, 70.2%, 40.8%

CMYK

66.3%, 70.2%, 0.0%, 59.2%

OKLCH

0.2969 0.1229 278.3

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#231F68

#64681F

Analogous

#1F4068

#481F68

#231F68

Triadic

#231F68

#68231F

#1F6823

Split Complementary

#231F68

#68481F

#40681F

Tetradic

#231F68

#681F40

#64681F

#1F6848

Color Blindness Simulation

Original

#231F68

Protanopia

#212156

Deuteranopia

#222252

Tritanopia

#234845

Achromatopsia

#252525

CSS Usage

background-color: #231F68;
color: #231F68;
border-color: #231F68;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CAC8EF
300
#A4A1E3
400
#736ED4
500
#423BC4
600
#352F9D
700
#2A257E
800
#211D62
900
#1B1948
950
#11102D

Contrast Checker

Text on white

14.31:1

AA Pass AAA Pass

Text on black

1.47:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026