#D43837

#D43837

Color Values

HEX

#D43837

RGB

212, 56, 55

HSL

0.4, 64.6%, 52.4%

HSV

0.4, 74.1%, 83.1%

CMYK

0.0%, 73.6%, 74.1%, 16.9%

OKLCH

0.5783 0.1932 25.9

Properties

Warm Dark Nearest: brown 3

Color Harmonies

Complementary

#D43837

#37D3D4

Analogous

#D43785

#D48737

#D43837

Triadic

#D43837

#37D438

#3837D4

Split Complementary

#D43837

#37D487

#3785D4

Tetradic

#D43837

#85D437

#37D3D4

#8737D4

Color Blindness Simulation

Original

#D43837

Protanopia

#908F37

Deuteranopia

#9AA537

Tritanopia

#CC3737

Achromatopsia

#595959

CSS Usage

background-color: #D43837;
color: #D43837;
border-color: #D43837;
Nearest Tailwind: Red 500 #EF4444

Tailwind Shades

50
#FCF3F3
100
#F7E3E3
200
#F2C5C4
300
#E99B9A
400
#DE6564
500
#D22E2D
600
#A82524
700
#861E1D
800
#691717
900
#4D1514
950
#300D0D

Contrast Checker

Text on white

4.75:1

AA Pass AAA Fail

Text on black

4.42:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026