#21102A

#21102A

Color Values

HEX

#21102A

RGB

33, 16, 42

HSL

279.2, 44.8%, 11.4%

HSV

279.2, 61.9%, 16.5%

CMYK

21.4%, 61.9%, 0.0%, 83.5%

OKLCH

0.2112 0.054 312.8

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#21102A

#192A10

Analogous

#14102A

#2A1026

#21102A

Triadic

#21102A

#2A2110

#102A21

Split Complementary

#21102A

#262A10

#102A14

Tetradic

#21102A

#2A1410

#192A10

#10262A

Color Blindness Simulation

Original

#21102A

Protanopia

#1A1924

Deuteranopia

#1B1C22

Tritanopia

#201F1E

Achromatopsia

#151515

CSS Usage

background-color: #21102A;
color: #21102A;
border-color: #21102A;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F8F4FA
100
#EFE6F4
200
#E0CBEB
300
#CAA6DD
400
#AE76CB
500
#9146B9
600
#743894
700
#5D2D76
800
#49235C
900
#361D44
950
#22122B

Contrast Checker

Text on white

17.91:1

AA Pass AAA Pass

Text on black

1.17:1

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