#1B0231

#1B0231

Color Values

HEX

#1B0231

RGB

27, 2, 49

HSL

271.9, 92.2%, 10.0%

HSV

271.9, 95.9%, 19.2%

CMYK

44.9%, 95.9%, 0.0%, 80.8%

OKLCH

0.1825 0.0886 303.4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1B0231

#183102

Analogous

#030231

#310230

#1B0231

Triadic

#1B0231

#311B02

#02311B

Split Complementary

#1B0231

#303102

#023103

Tetradic

#1B0231

#310302

#183102

#023031

Color Blindness Simulation

Original

#1B0231

Protanopia

#101026

Deuteranopia

#121423

Tritanopia

#1A1D1B

Achromatopsia

#0B0B0B

CSS Usage

background-color: #1B0231;
color: #1B0231;
border-color: #1B0231;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F1FD
100
#EEDFFB
200
#DDBAFC
300
#C589FA
400
#A64AF8
500
#870AF5
600
#6C08C4
700
#56069D
800
#43057B
900
#330859
950
#200538

Contrast Checker

Text on white

19.1:1

AA Pass AAA Pass

Text on black

1.1:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026