#21222F

#21222F

Color Values

HEX

#21222F

RGB

33, 34, 47

HSL

235.7, 17.5%, 15.7%

HSV

235.7, 29.8%, 18.4%

CMYK

29.8%, 27.7%, 0.0%, 81.6%

OKLCH

0.2569 0.0244 281.1

Properties

Cool Dark Nearest: RAL 5008 Grey Blue

Color Harmonies

Complementary

#21222F

#2F2E21

Analogous

#21292F

#27212F

#21222F

Triadic

#21222F

#2F2122

#222F21

Split Complementary

#21222F

#2F2721

#292F21

Tetradic

#21222F

#2F2129

#2F2E21

#212F27

Color Blindness Simulation

Original

#21222F

Protanopia

#21212C

Deuteranopia

#21212B

Tritanopia

#212929

Achromatopsia

#232323

CSS Usage

background-color: #21222F;
color: #21222F;
border-color: #21222F;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F6F6F8
100
#EAEBF0
200
#D5D6E2
300
#B7B9CD
400
#9093B1
500
#696C96
600
#545778
700
#434560
800
#35364B
900
#292A38
950
#1A1A23

Contrast Checker

Text on white

15.74:1

AA Pass AAA Pass

Text on black

1.33:1

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