#B23131

#B23131

Color Values

HEX

#B23131

RGB

178, 49, 49

HSL

0.0, 56.8%, 44.5%

HSV

0.0, 72.5%, 69.8%

CMYK

0.0%, 72.5%, 72.5%, 30.2%

OKLCH

0.5116 0.1659 25.2

Properties

Warm Dark Nearest: brown

Color Harmonies

Complementary

#B23131

#31B2B2

Analogous

#B23171

#B27131

#B23131

Triadic

#B23131

#31B231

#3131B2

Split Complementary

#B23131

#31B271

#3171B2

Tetradic

#B23131

#71B231

#31B2B2

#7131B2

Color Blindness Simulation

Original

#B23131

Protanopia

#7A7931

Deuteranopia

#828B31

Tritanopia

#AC3131

Achromatopsia

#4C4C4C

CSS Usage

background-color: #B23131;
color: #B23131;
border-color: #B23131;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FBF4F4
100
#F6E5E5
200
#F0C7C7
300
#E59F9F
400
#D66B6B
500
#C83737
600
#A02C2C
700
#802323
800
#641C1C
900
#491818
950
#2E0F0F

Contrast Checker

Text on white

6.22:1

AA Pass AAA Fail

Text on black

3.38:1

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