#21083A

#21083A

Color Values

HEX

#21083A

RGB

33, 8, 58

HSL

270.0, 75.8%, 12.9%

HSV

270.0, 86.2%, 22.7%

CMYK

43.1%, 86.2%, 0.0%, 77.3%

OKLCH

0.2113 0.0902 301.8

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#21083A

#213A08

Analogous

#08083A

#3A083A

#21083A

Triadic

#21083A

#3A2108

#083A21

Split Complementary

#21083A

#3A3A08

#083A08

Tetradic

#21083A

#3A0808

#213A08

#083A3A

Color Blindness Simulation

Original

#21083A

Protanopia

#16162E

Deuteranopia

#18192B

Tritanopia

#202422

Achromatopsia

#111111

CSS Usage

background-color: #21083A;
color: #21083A;
border-color: #21083A;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F2FC
100
#EDE2F9
200
#DBC0F6
300
#C293F0
400
#A159E8
500
#801FE0
600
#6619B3
700
#52148F
800
#400F70
900
#300F52
950
#1F0A33

Contrast Checker

Text on white

18.1:1

AA Pass AAA Pass

Text on black

1.16:1

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