#90010B

#90010B

Color Values

HEX

#90010B

RGB

144, 1, 11

HSL

355.8, 98.6%, 28.4%

HSV

355.8, 99.3%, 56.5%

CMYK

0.0%, 99.3%, 92.4%, 43.5%

OKLCH

0.4113 0.1671 27.2

Properties

Warm Dark Nearest: darkred

Color Harmonies

Complementary

#90010B

#019086

Analogous

#900152

#903E01

#90010B

Triadic

#90010B

#0B9001

#010B90

Split Complementary

#90010B

#01903E

#015290

Tetradic

#90010B

#529001

#019086

#3E0190

Color Blindness Simulation

Original

#90010B

Protanopia

#525109

Deuteranopia

#5A6508

Tritanopia

#890706

Achromatopsia

#202020

CSS Usage

background-color: #90010B;
color: #90010B;
border-color: #90010B;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FEF1F2
100
#FCDEE0
200
#FFB8BD
300
#FE858E
400
#FE4451
500
#FD0213
600
#CB0110
700
#A2010C
800
#7F010A
900
#5B050B
950
#3A0307

Contrast Checker

Text on white

9.57:1

AA Pass AAA Pass

Text on black

2.2:1

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