#A3000D

#A3000D

Color Values

HEX

#A3000D

RGB

163, 0, 13

HSL

355.2, 100.0%, 32.0%

HSV

355.2, 100.0%, 63.9%

CMYK

0.0%, 100.0%, 92.0%, 36.1%

OKLCH

0.4499 0.1835 27.3

Properties

Warm Dark Nearest: RAL 3001 Signal Red

Color Harmonies

Complementary

#A3000D

#00A396

Analogous

#A3005F

#A34500

#A3000D

Triadic

#A3000D

#0DA300

#000DA3

Split Complementary

#A3000D

#00A345

#005FA3

Tetradic

#A3000D

#5FA300

#00A396

#4500A3

Color Blindness Simulation

Original

#A3000D

Protanopia

#5C5B0A

Deuteranopia

#667209

Tritanopia

#9B0707

Achromatopsia

#242424

CSS Usage

background-color: #A3000D;
color: #A3000D;
border-color: #A3000D;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FEF1F2
100
#FCDEE0
200
#FFB8BD
300
#FF858E
400
#FF4251
500
#FF0014
600
#CC0010
700
#A3000D
800
#80000A
900
#5C050C
950
#3A0307

Contrast Checker

Text on white

8.19:1

AA Pass AAA Pass

Text on black

2.56:1

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