#211631

#211631

Color Values

HEX

#211631

RGB

33, 22, 49

HSL

264.4, 38.0%, 13.9%

HSV

264.4, 55.1%, 19.2%

CMYK

32.7%, 55.1%, 0.0%, 80.8%

OKLCH

0.2288 0.0523 301.2

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#211631

#263116

Analogous

#161831

#2E1631

#211631

Triadic

#211631

#312116

#163121

Split Complementary

#211631

#312E16

#183116

Tetradic

#211631

#311618

#263116

#16312E

Color Blindness Simulation

Original

#211631

Protanopia

#1C1C2A

Deuteranopia

#1D1E29

Tritanopia

#202524

Achromatopsia

#1A1A1A

CSS Usage

background-color: #211631;
color: #211631;
border-color: #211631;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F7F5FA
100
#ECE7F3
200
#D9CEE9
300
#BDABD9
400
#9A7DC5
500
#764FB0
600
#5F3F8D
700
#4C3371
800
#3B2858
900
#2D2041
950
#1D1429

Contrast Checker

Text on white

17.16:1

AA Pass AAA Pass

Text on black

1.22:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026