#331B43

#331B43

Color Values

HEX

#331B43

RGB

51, 27, 67

HSL

276,0, 42,6%, 18,4%

HSV

276,0, 59,7%, 26,3%

CMYK

23,9%, 59,7%, 0,0%, 73,7%

OKLCH

0,2751 0,0759 310,0

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#331B43

#2B431B

Analogous

#1F1B43

#431B3F

#331B43

Triadic

#331B43

#43331B

#1B4333

Split Complementary

#331B43

#3F431B

#1B431F

Tetradic

#331B43

#431F1B

#2B431B

#1B3F43

Color Blindness Simulation

Original

#331B43

Protanopia

#292839

Deuteranopia

#2A2C37

Tritanopia

#323230

Achromatopsia

#232323

CSS Usage

background-color: #331B43;
color: #331B43;
border-color: #331B43;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F5FA
100
#EEE7F4
200
#DECCEB
300
#C7A8DC
400
#A978C9
500
#8A49B6
600
#6F3B91
700
#592F74
800
#45255B
900
#341E43
950
#21132A

Contrast Checker

Text on white

15,23:1

AA Pass AAA Pass

Text on black

1,38:1

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