#211C3E

#211C3E

Color Values

HEX

#211C3E

RGB

33, 28, 62

HSL

248.8, 37.8%, 17.6%

HSV

248.8, 54.8%, 24.3%

CMYK

46.8%, 54.8%, 0.0%, 75.7%

OKLCH

0.2518 0.0626 287.8

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#211C3E

#393E1C

Analogous

#1C283E

#321C3E

#211C3E

Triadic

#211C3E

#3E211C

#1C3E21

Split Complementary

#211C3E

#3E321C

#283E1C

Tetradic

#211C3E

#3E1C28

#393E1C

#1C3E32

Color Blindness Simulation

Original

#211C3E

Protanopia

#1F1F36

Deuteranopia

#1F2034

Tritanopia

#212F2E

Achromatopsia

#202020

CSS Usage

background-color: #211C3E;
color: #211C3E;
border-color: #211C3E;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F6F5FA
100
#E9E7F3
200
#D2CEE9
300
#B1ABD9
400
#877DC4
500
#5D4FB0
600
#4B3F8D
700
#3C3370
800
#2F2858
900
#252041
950
#171429

Contrast Checker

Text on white

16.15:1

AA Pass AAA Pass

Text on black

1.3:1

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