#51100C

#51100C

Color Values

HEX

#51100C

RGB

81, 16, 12

HSL

3.5, 74.2%, 18.2%

HSV

3.5, 85.2%, 31.8%

CMYK

0.0%, 80.2%, 85.2%, 68.2%

OKLCH

0.2893 0.0965 28.3

Properties

Warm Dark Nearest: RAL 3009 Oxide Red

Color Harmonies

Complementary

#51100C

#0C4D51

Analogous

#510C2A

#51320C

#51100C

Triadic

#51100C

#0C5110

#100C51

Split Complementary

#51100C

#0C5132

#0C2A51

Tetradic

#51100C

#2A510C

#0C4D51

#320C51

Color Blindness Simulation

Original

#51100C

Protanopia

#35340D

Deuteranopia

#393D0D

Tritanopia

#4E0E0E

Achromatopsia

#1E1E1E

CSS Usage

background-color: #51100C;
color: #51100C;
border-color: #51100C;
Nearest Tailwind: Red 950 #450A0A

Tailwind Shades

50
#FCF3F3
100
#F8E3E2
200
#F6C4C1
300
#EF9A94
400
#E7635B
500
#DE2C21
600
#B2231A
700
#8E1C15
800
#6F1610
900
#511410
950
#330D0A

Contrast Checker

Text on white

14.69:1

AA Pass AAA Pass

Text on black

1.43:1

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