#900B09

#900B09

Color Values

HEX

#900B09

RGB

144, 11, 9

HSL

0.9, 88.2%, 30.0%

HSV

0.9, 93.8%, 56.5%

CMYK

0.0%, 92.4%, 93.8%, 43.5%

OKLCH

0.4152 0.1634 28.7

Properties

Warm Dark Nearest: darkred

Color Harmonies

Complementary

#900B09

#098E90

Analogous

#90094A

#904F09

#900B09

Triadic

#900B09

#09900B

#0B0990

Split Complementary

#900B09

#09904F

#094A90

Tetradic

#900B09

#4A9009

#098E90

#4F0990

Color Blindness Simulation

Original

#900B09

Protanopia

#565509

Deuteranopia

#5E680A

Tritanopia

#890A0A

Achromatopsia

#272727

CSS Usage

background-color: #900B09;
color: #900B09;
border-color: #900B09;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FDF2F2
100
#FBE0E0
200
#FBBDBC
300
#F88D8C
400
#F4504D
500
#F0120F
600
#C00F0C
700
#9A0C0A
800
#780908
900
#570B0A
950
#370706

Contrast Checker

Text on white

9.38:1

AA Pass AAA Pass

Text on black

2.24:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026