#3B181F

#3B181F

Color Values

HEX

#3B181F

RGB

59, 24, 31

HSL

348.0, 42.2%, 16.3%

HSV

348.0, 59.3%, 23.1%

CMYK

0.0%, 59.3%, 47.5%, 76.9%

OKLCH

0.2633 0.0557 9.1

Properties

Warm Dark Nearest: RAL 3007 Black Red

Color Harmonies

Complementary

#3B181F

#183B34

Analogous

#3B1831

#3B2318

#3B181F

Triadic

#3B181F

#1F3B18

#181F3B

Split Complementary

#3B181F

#183B23

#18313B

Tetradic

#3B181F

#313B18

#183B34

#23183B

Color Blindness Simulation

Original

#3B181F

Protanopia

#2C2C1D

Deuteranopia

#2E301D

Tritanopia

#391C1C

Achromatopsia

#202020

CSS Usage

background-color: #3B181F;
color: #3B181F;
border-color: #3B181F;
Nearest Tailwind: Red 950 #450A0A

Tailwind Shades

50
#FAF5F6
100
#F4E7E9
200
#EACCD2
300
#DCA8B2
400
#C87989
500
#B54A5F
600
#913B4C
700
#742F3D
800
#5B2530
900
#431E25
950
#2A1318

Contrast Checker

Text on white

15.71:1

AA Pass AAA Pass

Text on black

1.34:1

AA Fail AAA Fail

Related Articles

Tutorials

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

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026