#B31312

#B31312

Color Values

HEX

#B31312

RGB

179, 19, 18

HSL

0.4, 81.7%, 38.6%

HSV

0.4, 89.9%, 70.2%

CMYK

0.0%, 89.4%, 89.9%, 29.8%

OKLCH

0.4886 0.1905 28.3

Properties

Warm Dark Nearest: RAL 2002 Vermilion

Color Harmonies

Complementary

#B31312

#12B2B3

Analogous

#B31261

#B36412

#B31312

Triadic

#B31312

#12B313

#1312B3

Split Complementary

#B31312

#12B364

#1261B3

Tetradic

#B31312

#61B312

#12B2B3

#6412B3

Color Blindness Simulation

Original

#B31312

Protanopia

#6E6C12

Deuteranopia

#778312

Tritanopia

#AB1212

Achromatopsia

#353535

CSS Usage

background-color: #B31312;
color: #B31312;
border-color: #B31312;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF2F2
100
#FAE1E1
200
#F8BFBE
300
#F49090
400
#EE5554
500
#E81917
600
#B91413
700
#94100F
800
#740C0C
900
#540D0D
950
#350808

Contrast Checker

Text on white

6.96:1

AA Pass AAA Fail

Text on black

3.02:1

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