#900103

#900103

Color Values

HEX

#900103

RGB

144, 1, 3

HSL

359.2, 98.6%, 28.4%

HSV

359.2, 99.3%, 56.5%

CMYK

0.0%, 99.3%, 97.9%, 43.5%

OKLCH

0.4109 0.1677 28.8

Properties

Warm Dark Nearest: darkred

Color Harmonies

Complementary

#900103

#01908E

Analogous

#90014A

#904701

#900103

Triadic

#900103

#039001

#010390

Split Complementary

#900103

#019047

#014A90

Tetradic

#900103

#4A9001

#01908E

#470190

Color Blindness Simulation

Original

#900103

Protanopia

#525103

Deuteranopia

#5A6502

Tritanopia

#890202

Achromatopsia

#202020

CSS Usage

background-color: #900103;
color: #900103;
border-color: #900103;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FEF1F1
100
#FCDEDF
200
#FFB8B9
300
#FE8587
400
#FE4446
500
#FD0205
600
#CB0104
700
#A20103
800
#7F0103
900
#5B0507
950
#3A0304

Contrast Checker

Text on white

9.58:1

AA Pass AAA Pass

Text on black

2.19:1

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