#66231F

#66231F

Color Values

HEX

#66231F

RGB

102, 35, 31

HSL

3.4, 53.4%, 26.1%

HSV

3.4, 69.6%, 40.0%

CMYK

0.0%, 65.7%, 69.6%, 60.0%

OKLCH

0.357 0.0976 26.6

Properties

Warm Dark Nearest: RAL 3009 Oxide Red

Color Harmonies

Complementary

#66231F

#1F6266

Analogous

#661F3F

#66471F

#66231F

Triadic

#66231F

#1F6623

#231F66

Split Complementary

#66231F

#1F6647

#1F3F66

Tetradic

#66231F

#3F661F

#1F6266

#471F66

Color Blindness Simulation

Original

#66231F

Protanopia

#494820

Deuteranopia

#4D5220

Tritanopia

#632121

Achromatopsia

#313131

CSS Usage

background-color: #66231F;
color: #66231F;
border-color: #66231F;
Nearest Tailwind: Red 950 #450A0A

Tailwind Shades

50
#FBF4F4
100
#F5E6E5
200
#EECAC8
300
#E2A5A1
400
#D3746E
500
#C4433B
600
#9C3630
700
#7D2B26
800
#62221E
900
#481C19
950
#2D1210

Contrast Checker

Text on white

11.51:1

AA Pass AAA Pass

Text on black

1.83:1

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