#B71F15

#B71F15

Color Values

HEX

#B71F15

RGB

183, 31, 21

HSL

3.7, 79.4%, 40.0%

HSV

3.7, 88.5%, 71.8%

CMYK

0.0%, 83.1%, 88.5%, 28.2%

OKLCH

0.503 0.1877 29.4

Properties

Warm Dark Nearest: RAL 2002 Vermilion

Color Harmonies

Complementary

#B71F15

#15ADB7

Analogous

#B7155C

#B77015

#B71F15

Triadic

#B71F15

#15B71F

#1F15B7

Split Complementary

#B71F15

#15B770

#155CB7

Tetradic

#B71F15

#5CB715

#15ADB7

#7015B7

Color Blindness Simulation

Original

#B71F15

Protanopia

#757417

Deuteranopia

#7E8918

Tritanopia

#AF191A

Achromatopsia

#3F3F3F

CSS Usage

background-color: #B71F15;
color: #B71F15;
border-color: #B71F15;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF3F2
100
#F9E3E1
200
#F8C2BF
300
#F29791
400
#EC5F56
500
#E5271A
600
#B71F15
700
#921911
800
#72130D
900
#53120E
950
#340B09

Contrast Checker

Text on white

6.52:1

AA Pass AAA Fail

Text on black

3.22:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026