#21292F

#21292F

Color Values

HEX

#21292F

RGB

33, 41, 47

HSL

205.7, 17.5%, 15.7%

HSV

205.7, 29.8%, 18.4%

CMYK

29.8%, 12.8%, 0.0%, 81.6%

OKLCH

0.2758 0.0159 240.6

Properties

Cool Dark Nearest: RAL 7021 Black Grey

Color Harmonies

Complementary

#21292F

#2F2721

Analogous

#212F2E

#21222F

#21292F

Triadic

#21292F

#2F2129

#292F21

Split Complementary

#21292F

#2F2122

#2F2E21

Tetradic

#21292F

#2E212F

#2F2721

#222F21

Color Blindness Simulation

Original

#21292F

Protanopia

#24252E

Deuteranopia

#24232D

Tritanopia

#212C2C

Achromatopsia

#282828

CSS Usage

background-color: #21292F;
color: #21292F;
border-color: #21292F;
Nearest Tailwind: Zinc 800 #27272A

Tailwind Shades

50
#F6F8F8
100
#EAEEF0
200
#D5DCE2
300
#B7C3CD
400
#90A3B1
500
#698396
600
#546978
700
#435460
800
#35414B
900
#293238
950
#1A1F23

Contrast Checker

Text on white

14.76:1

AA Pass AAA Pass

Text on black

1.42:1

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