#AC171D

#AC171D

Color Values

HEX

#AC171D

RGB

172, 23, 29

HSL

357.6, 76.4%, 38.2%

HSV

357.6, 86.6%, 67.5%

CMYK

0.0%, 86.6%, 83.1%, 32.5%

OKLCH

0.4779 0.1813 26.2

Properties

Warm Dark Nearest: firebrick

Color Harmonies

Complementary

#AC171D

#17ACA6

Analogous

#AC1767

#AC5B17

#AC171D

Triadic

#AC171D

#1DAC17

#171DAC

Split Complementary

#AC171D

#17AC5B

#1767AC

Tetradic

#AC171D

#67AC17

#17ACA6

#5B17AC

Color Blindness Simulation

Original

#AC171D

Protanopia

#6B6A1C

Deuteranopia

#747F1B

Tritanopia

#A51A1A

Achromatopsia

#373737

CSS Usage

background-color: #AC171D;
color: #AC171D;
border-color: #AC171D;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FCF2F3
100
#F9E2E2
200
#F7C0C2
300
#F19397
400
#E9595E
500
#E11E26
600
#B4181E
700
#901318
800
#700F13
900
#520F12
950
#340A0B

Contrast Checker

Text on white

7.26:1

AA Pass AAA Pass

Text on black

2.89:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

ม.ค. 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

ม.ค. 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

ม.ค. 15, 2026