#21053C

#21053C

Color Values

HEX

#21053C

RGB

33, 5, 60

HSL

270.5, 84.6%, 12.7%

HSV

270.5, 91.7%, 23.5%

CMYK

45.0%, 91.7%, 0.0%, 76.5%

OKLCH

0.2089 0.0973 301.4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#21053C

#203C05

Analogous

#05053C

#3C053B

#21053C

Triadic

#21053C

#3C2105

#053C21

Split Complementary

#21053C

#3B3C05

#053C05

Tetradic

#21053C

#3C0505

#203C05

#053B3C

Color Blindness Simulation

Original

#21053C

Protanopia

#15152F

Deuteranopia

#16192C

Tritanopia

#202422

Achromatopsia

#0F0F0F

CSS Usage

background-color: #21053C;
color: #21053C;
border-color: #21053C;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F2FD
100
#EDE0FA
200
#DCBDFA
300
#C38EF6
400
#A251F0
500
#8114EB
600
#6710BC
700
#530D97
800
#410A76
900
#310C55
950
#1F0736

Contrast Checker

Text on white

18.24:1

AA Pass AAA Pass

Text on black

1.15:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026