#331B41

#331B41

Color Values

HEX

#331B41

RGB

51, 27, 65

HSL

277,9, 41,3%, 18,0%

HSV

277,9, 58,5%, 25,5%

CMYK

21,5%, 58,5%, 0,0%, 74,5%

OKLCH

0,2738 0,0731 311,6

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#331B41

#29411B

Analogous

#201B41

#411B3C

#331B41

Triadic

#331B41

#41331B

#1B4133

Split Complementary

#331B41

#3C411B

#1B4120

Tetradic

#331B41

#41201B

#29411B

#1B3C41

Color Blindness Simulation

Original

#331B41

Protanopia

#292838

Deuteranopia

#2A2C36

Tritanopia

#32312F

Achromatopsia

#232323

CSS Usage

background-color: #331B41;
color: #331B41;
border-color: #331B41;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F5FA
100
#EFE7F3
200
#DFCDEA
300
#C8A9DB
400
#AB7AC8
500
#8D4BB4
600
#713C90
700
#5A3073
800
#47255A
900
#351E42
950
#22132A

Contrast Checker

Text on white

15,29:1

AA Pass AAA Pass

Text on black

1,37:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Oca 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Oca 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Oca 15, 2026