#211C31

#211C31

Color Values

HEX

#211C31

RGB

33, 28, 49

HSL

254.3, 27.3%, 15.1%

HSV

254.3, 42.9%, 19.2%

CMYK

32.7%, 42.9%, 0.0%, 80.8%

OKLCH

0.2428 0.0398 294.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#211C31

#2C311C

Analogous

#1C2131

#2C1C31

#211C31

Triadic

#211C31

#31211C

#1C3121

Split Complementary

#211C31

#312C1C

#21311C

Tetradic

#211C31

#311C21

#2C311C

#1C312C

Color Blindness Simulation

Original

#211C31

Protanopia

#1F1F2C

Deuteranopia

#1F202B

Tritanopia

#212827

Achromatopsia

#1F1F1F

CSS Usage

background-color: #211C31;
color: #211C31;
border-color: #211C31;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F6F6F9
100
#EBE9F1
200
#D6D2E5
300
#B9B1D3
400
#9387BA
500
#6D5DA2
600
#574A82
700
#463B68
800
#372E51
900
#2A253C
950
#1B1726

Contrast Checker

Text on white

16.47:1

AA Pass AAA Pass

Text on black

1.28:1

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