#831821

#831821

Color Values

HEX

#831821

RGB

131, 24, 33

HSL

355.0, 69.0%, 30.4%

HSV

355.0, 81.7%, 51.4%

CMYK

0.0%, 81.7%, 74.8%, 48.6%

OKLCH

0.3997 0.1411 22.6

Properties

Warm Dark Nearest: NCS S 3060-R Dark Red

Color Harmonies

Complementary

#831821

#18837A

Analogous

#831856

#834518

#831821

Triadic

#831821

#218318

#182183

Split Complementary

#831821

#188345

#185683

Tetradic

#831821

#568318

#18837A

#451883

Color Blindness Simulation

Original

#831821

Protanopia

#55541F

Deuteranopia

#5B631E

Tritanopia

#7E1D1D

Achromatopsia

#2F2F2F

CSS Usage

background-color: #831821;
color: #831821;
border-color: #831821;
Nearest Tailwind: Red 900 #7F1D1D

Tailwind Shades

50
#FCF3F4
100
#F8E3E4
200
#F4C3C7
300
#EC989F
400
#E2606A
500
#D72836
600
#AC202B
700
#8A1923
800
#6C141B
900
#4F1217
950
#320C0F

Contrast Checker

Text on white

9.92:1

AA Pass AAA Pass

Text on black

2.12:1

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