#21142B

#21142B

Color Values

HEX

#21142B

RGB

33, 20, 43

HSL

273.9, 36.5%, 12.4%

HSV

273.9, 53.5%, 16.9%

CMYK

23.3%, 53.5%, 0.0%, 83.1%

OKLCH

0.2203 0.0468 309.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#21142B

#1E2B14

Analogous

#16142B

#2B142A

#21142B

Triadic

#21142B

#2B2114

#142B21

Split Complementary

#21142B

#2A2B14

#142B16

Tetradic

#21142B

#2B1614

#1E2B14

#142A2B

Color Blindness Simulation

Original

#21142B

Protanopia

#1B1B25

Deuteranopia

#1C1D24

Tritanopia

#202120

Achromatopsia

#181818

CSS Usage

background-color: #21142B;
color: #21142B;
border-color: #21142B;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F8F5FA
100
#EEE8F3
200
#DDCEE8
300
#C5ABD8
400
#A57EC3
500
#8651AE
600
#6B418B
700
#55346F
800
#432857
900
#332140
950
#201529

Contrast Checker

Text on white

17.51:1

AA Pass AAA Pass

Text on black

1.2:1

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