#03031B

#03031B

Color Values

HEX

#03031B

RGB

3, 3, 27

HSL

240.0, 80.0%, 5.9%

HSV

240.0, 88.9%, 10.6%

CMYK

88.9%, 88.9%, 0.0%, 89.4%

OKLCH

0.1227 0.0553 274.6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#03031B

#1B1B03

Analogous

#030F1B

#0F031B

#03031B

Triadic

#03031B

#1B0303

#031B03

Split Complementary

#03031B

#1B0F03

#0F1B03

Tetradic

#03031B

#1B030F

#1B1B03

#031B0F

Color Blindness Simulation

Original

#03031B

Protanopia

#030315

Deuteranopia

#030314

Tritanopia

#031110

Achromatopsia

#050505

CSS Usage

background-color: #03031B;
color: #03031B;
border-color: #03031B;
Nearest Tailwind: Slate 950 #020617

Tailwind Shades

50
#F2F2FD
100
#E1E1F9
200
#BFBFF8
300
#9191F3
400
#5555EC
500
#1919E6
600
#1414B8
700
#101093
800
#0D0D73
900
#0E0E53
950
#090935

Contrast Checker

Text on white

20.33:1

AA Pass AAA Pass

Text on black

1.03:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026