#21152F

#21152F

Color Values

HEX

#21152F

RGB

33, 21, 47

HSL

267.7, 38.2%, 13.3%

HSV

267.7, 55.3%, 18.4%

CMYK

29.8%, 55.3%, 0.0%, 81.6%

OKLCH

0.2252 0.0511 303.9

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#21152F

#232F15

Analogous

#15162F

#2E152F

#21152F

Triadic

#21152F

#2F2115

#152F21

Split Complementary

#21152F

#2F2E15

#162F15

Tetradic

#21152F

#2F1516

#232F15

#152F2E

Color Blindness Simulation

Original

#21152F

Protanopia

#1C1C29

Deuteranopia

#1C1D27

Tritanopia

#202423

Achromatopsia

#191919

CSS Usage

background-color: #21152F;
color: #21152F;
border-color: #21152F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F5FA
100
#EDE7F3
200
#DACEE9
300
#C0AAD9
400
#9E7DC5
500
#7C4FB0
600
#633F8D
700
#4F3271
800
#3E2758
900
#2F2041
950
#1E1429

Contrast Checker

Text on white

17.31:1

AA Pass AAA Pass

Text on black

1.21:1

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