#AD0000

#AD0000

Color Values

HEX

#AD0000

RGB

173, 0, 0

HSL

0.0, 100.0%, 33.9%

HSV

0.0, 100.0%, 67.8%

CMYK

0.0%, 100.0%, 100.0%, 32.2%

OKLCH

0.4695 0.1927 29.2

Properties

Warm Dark Nearest: RAL 2002 Vermilion

Color Harmonies

Complementary

#AD0000

#00ADAD

Analogous

#AD0056

#AD5600

#AD0000

Triadic

#AD0000

#00AD00

#0000AD

Split Complementary

#AD0000

#00AD56

#0056AD

Tetradic

#AD0000

#56AD00

#00ADAD

#5600AD

Color Blindness Simulation

Original

#AD0000

Protanopia

#626100

Deuteranopia

#6C7900

Tritanopia

#A40000

Achromatopsia

#252525

CSS Usage

background-color: #AD0000;
color: #AD0000;
border-color: #AD0000;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FEF1F1
100
#FCDEDE
200
#FFB8B8
300
#FF8585
400
#FF4242
500
#FF0000
600
#CC0000
700
#A30000
800
#800000
900
#5C0505
950
#3A0303

Contrast Checker

Text on white

7.56:1

AA Pass AAA Pass

Text on black

2.78:1

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