#AC0A09

#AC0A09

Color Values

HEX

#AC0A09

RGB

172, 10, 9

HSL

0.4, 90.1%, 35.5%

HSV

0.4, 94.8%, 67.5%

CMYK

0.0%, 94.2%, 94.8%, 32.5%

OKLCH

0.471 0.1883 28.8

Properties

Warm Dark Nearest: RAL 2002 Vermilion

Color Harmonies

Complementary

#AC0A09

#09ABAC

Analogous

#AC0959

#AC5C09

#AC0A09

Triadic

#AC0A09

#09AC0A

#0A09AC

Split Complementary

#AC0A09

#09AC5C

#0959AC

Tetradic

#AC0A09

#59AC09

#09ABAC

#5C09AC

Color Blindness Simulation

Original

#AC0A09

Protanopia

#666409

Deuteranopia

#6F7B09

Tritanopia

#A40909

Achromatopsia

#2C2C2C

CSS Usage

background-color: #AC0A09;
color: #AC0A09;
border-color: #AC0A09;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF2F1
100
#FBE0DF
200
#FBBCBB
300
#F98B8B
400
#F64D4C
500
#F20E0D
600
#C20B0A
700
#9B0908
800
#790706
900
#580A09
950
#370606

Contrast Checker

Text on white

7.5:1

AA Pass AAA Pass

Text on black

2.8:1

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