#420403

#420403

Color Values

HEX

#420403

RGB

66, 4, 3

HSL

1.0, 91.3%, 13.5%

HSV

1.0, 95.5%, 25.9%

CMYK

0.0%, 93.9%, 95.5%, 74.1%

OKLCH

0.2433 0.0925 28.6

Properties

Warm Dark Nearest: RAL 8012 Red Brown

Color Harmonies

Complementary

#420403

#034142

Analogous

#420321

#422303

#420403

Triadic

#420403

#034204

#040342

Split Complementary

#420403

#034223

#032142

Tetradic

#420403

#214203

#034142

#230342

Color Blindness Simulation

Original

#420403

Protanopia

#272703

Deuteranopia

#2B2F03

Tritanopia

#3F0303

Achromatopsia

#111111

CSS Usage

background-color: #420403;
color: #420403;
border-color: #420403;
Nearest Tailwind: Red 950 #450A0A

Tailwind Shades

50
#FDF2F1
100
#FBE0DF
200
#FCBCBB
300
#FA8C8A
400
#F74D4B
500
#F40F0B
600
#C30C09
700
#9C0A07
800
#7A0706
900
#580A09
950
#380605

Contrast Checker

Text on white

16.8:1

AA Pass AAA Pass

Text on black

1.25:1

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