#AC3731

#AC3731

Color Values

HEX

#AC3731

RGB

172, 55, 49

HSL

2.9, 55.7%, 43.3%

HSV

2.9, 71.5%, 67.5%

CMYK

0.0%, 68.0%, 71.5%, 32.5%

OKLCH

0.5076 0.1538 27.0

Properties

Warm Dark Nearest: NCS S 2060-R Deep Red

Color Harmonies

Complementary

#AC3731

#31A6AC

Analogous

#AC3168

#AC7431

#AC3731

Triadic

#AC3731

#31AC37

#3731AC

Split Complementary

#AC3731

#31AC74

#3168AC

Tetradic

#AC3731

#68AC31

#31A6AC

#7431AC

Color Blindness Simulation

Original

#AC3731

Protanopia

#797832

Deuteranopia

#808933

Tritanopia

#A63434

Achromatopsia

#4F4F4F

CSS Usage

background-color: #AC3731;
color: #AC3731;
border-color: #AC3731;
Nearest Tailwind: Red 800 #991B1B

Tailwind Shades

50
#FBF4F4
100
#F6E6E5
200
#EFC9C7
300
#E4A3A0
400
#D5716C
500
#C73F38
600
#9F332D
700
#7F2924
800
#63201C
900
#491B18
950
#2E110F

Contrast Checker

Text on white

6.28:1

AA Pass AAA Fail

Text on black

3.34:1

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