#B71B1B

#B71B1B

Color Values

HEX

#B71B1B

RGB

183, 27, 27

HSL

0.0, 74.3%, 41.2%

HSV

0.0, 85.2%, 71.8%

CMYK

0.0%, 85.2%, 85.2%, 28.2%

OKLCH

0.501 0.1893 27.6

Properties

Warm Dark Nearest: firebrick

Color Harmonies

Complementary

#B71B1B

#1BB7B7

Analogous

#B71B69

#B7691B

#B71B1B

Triadic

#B71B1B

#1BB71B

#1B1BB7

Split Complementary

#B71B1B

#1BB769

#1B69B7

Tetradic

#B71B1B

#69B71B

#1BB7B7

#691BB7

Color Blindness Simulation

Original

#B71B1B

Protanopia

#73721B

Deuteranopia

#7C881B

Tritanopia

#AF1B1B

Achromatopsia

#3C3C3C

CSS Usage

background-color: #B71B1B;
color: #B71B1B;
border-color: #B71B1B;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FCF3F3
100
#F8E2E2
200
#F6C1C1
300
#EF9494
400
#E75B5B
500
#DE2121
600
#B21A1A
700
#8E1515
800
#6F1010
900
#511010
950
#330A0A

Contrast Checker

Text on white

6.59:1

AA Pass AAA Fail

Text on black

3.19:1

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