#B43737

#B43737

Color Values

HEX

#B43737

RGB

180, 55, 55

HSL

0.0, 53.2%, 46.1%

HSV

0.0, 69.4%, 70.6%

CMYK

0.0%, 69.4%, 69.4%, 29.4%

OKLCH

0.5222 0.1615 24.7

Properties

Warm Dark Nearest: NCS S 2060-R Deep Red

Color Harmonies

Complementary

#B43737

#37B4B4

Analogous

#B43776

#B47637

#B43737

Triadic

#B43737

#37B437

#3737B4

Split Complementary

#B43737

#37B476

#3776B4

Tetradic

#B43737

#76B437

#37B4B4

#7637B4

Color Blindness Simulation

Original

#B43737

Protanopia

#7E7D37

Deuteranopia

#858E37

Tritanopia

#AE3737

Achromatopsia

#525252

CSS Usage

background-color: #B43737;
color: #B43737;
border-color: #B43737;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FBF4F4
100
#F5E5E5
200
#EEC8C8
300
#E2A1A1
400
#D36E6E
500
#C33C3C
600
#9C3030
700
#7D2626
800
#621E1E
900
#481919
950
#2D1010

Contrast Checker

Text on white

5.93:1

AA Pass AAA Fail

Text on black

3.54:1

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