#21302F

#21302F

Color Values

HEX

#21302F

RGB

33, 48, 47

HSL

176.0, 18.5%, 15.9%

HSV

176.0, 31.2%, 18.8%

CMYK

31.3%, 0.0%, 2.1%, 81.2%

OKLCH

0.2954 0.0201 191.0

Properties

Cool Dark Nearest: RAL 7016 Anthracite Grey

Color Harmonies

Complementary

#21302F

#302122

Analogous

#213028

#212A30

#21302F

Triadic

#21302F

#2F2130

#302F21

Split Complementary

#21302F

#30212A

#302821

Tetradic

#21302F

#282130

#302122

#2A3021

Color Blindness Simulation

Original

#21302F

Protanopia

#27282F

Deuteranopia

#27262F

Tritanopia

#222F2F

Achromatopsia

#2D2D2D

CSS Usage

background-color: #21302F;
color: #21302F;
border-color: #21302F;
Nearest Tailwind: Neutral 800 #262626

Tailwind Shades

50
#F6F9F8
100
#EAF0F0
200
#D5E2E1
300
#B6CDCC
400
#8FB2B0
500
#689794
600
#537976
700
#43615F
800
#344C4A
900
#283937
950
#1A2423

Contrast Checker

Text on white

13.74:1

AA Pass AAA Pass

Text on black

1.53:1

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