#290B3B

#290B3B

Color Values

HEX

#290B3B

RGB

41, 11, 59

HSL

277.5, 68.6%, 13.7%

HSV

277.5, 81.4%, 23.1%

CMYK

30.5%, 81.4%, 0.0%, 76.9%

OKLCH

0.2285 0.0894 309.7

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#290B3B

#1D3B0B

Analogous

#110B3B

#3B0B35

#290B3B

Triadic

#290B3B

#3B290B

#0B3B29

Split Complementary

#290B3B

#353B0B

#0B3B11

Tetradic

#290B3B

#3B110B

#1D3B0B

#0B353B

Color Blindness Simulation

Original

#290B3B

Protanopia

#1C1C2F

Deuteranopia

#1E202D

Tritanopia

#272624

Achromatopsia

#151515

CSS Usage

background-color: #290B3B;
color: #290B3B;
border-color: #290B3B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F3FC
100
#F0E3F8
200
#E1C3F4
300
#CC98EC
400
#B160E1
500
#9528D7
600
#7720AC
700
#601A8A
800
#4B146B
900
#38134E
950
#230C31

Contrast Checker

Text on white

17.42:1

AA Pass AAA Pass

Text on black

1.21:1

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