#21131F

#21131F

Color Values

HEX

#21131F

RGB

33, 19, 31

HSL

308.6, 26.9%, 10.2%

HSV

308.6, 42.4%, 12.9%

CMYK

0.0%, 42.4%, 6.1%, 87.1%

OKLCH

0.211 0.0315 331.8

Properties

Warm Dark Nearest: RAL 5011 Steel Blue

Color Harmonies

Complementary

#21131F

#132115

Analogous

#1C1321

#211318

#21131F

Triadic

#21131F

#1F2113

#131F21

Split Complementary

#21131F

#182113

#13211C

Tetradic

#21131F

#211C13

#132115

#131821

Color Blindness Simulation

Original

#21131F

Protanopia

#1B1B1C

Deuteranopia

#1C1D1B

Tritanopia

#201A19

Achromatopsia

#171717

CSS Usage

background-color: #21131F;
color: #21131F;
border-color: #21131F;
Nearest Tailwind: Zinc 900 #18181B

Tailwind Shades

50
#F9F6F9
100
#F1E9F0
200
#E5D2E2
300
#D2B1CE
400
#BA87B3
500
#A25D98
600
#814B7A
700
#683C61
800
#512F4C
900
#3C2539
950
#261724

Contrast Checker

Text on white

17.83:1

AA Pass AAA Pass

Text on black

1.18:1

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