#631815

#631815

Color Values

HEX

#631815

RGB

99, 24, 21

HSL

2.3, 65.0%, 23.5%

HSV

2.3, 78.8%, 38.8%

CMYK

0.0%, 75.8%, 78.8%, 61.2%

OKLCH

0.3355 0.1079 27.0

Properties

Warm Dark Nearest: RAL 3009 Oxide Red

Color Harmonies

Complementary

#631815

#156063

Analogous

#631539

#633F15

#631815

Triadic

#631815

#156318

#181563

Split Complementary

#631815

#15633F

#153963

Tetradic

#631815

#396315

#156063

#3F1563

Color Blindness Simulation

Original

#631815

Protanopia

#434216

Deuteranopia

#474C16

Tritanopia

#5F1616

Achromatopsia

#282828

CSS Usage

background-color: #631815;
color: #631815;
border-color: #631815;
Nearest Tailwind: Red 900 #7F1D1D

Tailwind Shades

50
#FCF3F3
100
#F7E4E3
200
#F3C6C4
300
#EA9D9A
400
#DE6863
500
#D2332D
600
#A82924
700
#87211D
800
#691916
900
#4D1614
950
#310E0D

Contrast Checker

Text on white

12.56:1

AA Pass AAA Pass

Text on black

1.67:1

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