#B31818

#B31818

Color Values

HEX

#B31818

RGB

179, 24, 24

HSL

0.0, 76.4%, 39.8%

HSV

0.0, 86.6%, 70.2%

CMYK

0.0%, 86.6%, 86.6%, 29.8%

OKLCH

0.4914 0.1876 27.8

Properties

Warm Dark Nearest: firebrick

Color Harmonies

Complementary

#B31818

#18B3B3

Analogous

#B31865

#B36518

#B31818

Triadic

#B31818

#18B318

#1818B3

Split Complementary

#B31818

#18B365

#1865B3

Tetradic

#B31818

#65B318

#18B3B3

#6518B3

Color Blindness Simulation

Original

#B31818

Protanopia

#706F18

Deuteranopia

#798418

Tritanopia

#AB1818

Achromatopsia

#393939

CSS Usage

background-color: #B31818;
color: #B31818;
border-color: #B31818;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FCF2F2
100
#F9E2E2
200
#F7C0C0
300
#F19393
400
#E95959
500
#E11E1E
600
#B41818
700
#901313
800
#700F0F
900
#520F0F
950
#340A0A

Contrast Checker

Text on white

6.86:1

AA Pass AAA Fail

Text on black

3.06:1

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