#21273C

#21273C

Color Values

HEX

#21273C

RGB

33, 39, 60

HSL

226.7, 29.0%, 18.2%

HSV

226.7, 45.0%, 23.5%

CMYK

45.0%, 35.0%, 0.0%, 76.5%

OKLCH

0.2773 0.0399 271.4

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#21273C

#3C3621

Analogous

#21343C

#28213C

#21273C

Triadic

#21273C

#3C2127

#273C21

Split Complementary

#21273C

#3C2821

#343C21

Tetradic

#21273C

#3C2134

#3C3621

#213C28

Color Blindness Simulation

Original

#21273C

Protanopia

#242437

Deuteranopia

#232336

Tritanopia

#213332

Achromatopsia

#272727

CSS Usage

background-color: #21273C;
color: #21273C;
border-color: #21273C;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F6F9
100
#E9EBF2
200
#D1D6E6
300
#B0B8D4
400
#8591BC
500
#5B6BA4
600
#485684
700
#3A4469
800
#2D3552
900
#24293D
950
#171A27

Contrast Checker

Text on white

14.79:1

AA Pass AAA Pass

Text on black

1.42:1

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