#66221B

#66221B

Color Values

HEX

#66221B

RGB

102, 34, 27

HSL

5.6, 58.1%, 25.3%

HSV

5.6, 73.5%, 40.0%

CMYK

0.0%, 66.7%, 73.5%, 60.0%

OKLCH

0.3549 0.0996 28.9

Properties

Warm Dark Nearest: RAL 3009 Oxide Red

Color Harmonies

Complementary

#66221B

#1B5F66

Analogous

#661B3A

#66481B

#66221B

Triadic

#66221B

#1B6622

#221B66

Split Complementary

#66221B

#1B6648

#1B3A66

Tetradic

#66221B

#3A661B

#1B5F66

#481B66

Color Blindness Simulation

Original

#66221B

Protanopia

#49481D

Deuteranopia

#4C521D

Tritanopia

#631E1E

Achromatopsia

#303030

CSS Usage

background-color: #66221B;
color: #66221B;
border-color: #66221B;
Nearest Tailwind: Red 950 #450A0A

Tailwind Shades

50
#FBF4F4
100
#F6E6E4
200
#F0CAC7
300
#E5A59E
400
#D7746A
500
#CA4335
600
#A1362B
700
#812B22
800
#65221B
900
#4A1C17
950
#2F120F

Contrast Checker

Text on white

11.6:1

AA Pass AAA Pass

Text on black

1.81:1

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