#1C0139

#1C0139

Color Values

HEX

#1C0139

RGB

28, 1, 57

HSL

268.9, 96.6%, 11.4%

HSV

268.9, 98.2%, 22.4%

CMYK

50.9%, 98.2%, 0.0%, 77.6%

OKLCH

0.1914 0.0997 299.1

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1C0139

#1E3901

Analogous

#010239

#380139

#1C0139

Triadic

#1C0139

#391C01

#01391C

Split Complementary

#1C0139

#393801

#023901

Tetradic

#1C0139

#390102

#1E3901

#013938

Color Blindness Simulation

Original

#1C0139

Protanopia

#10102B

Deuteranopia

#121428

Tritanopia

#1B211E

Achromatopsia

#0B0B0B

CSS Usage

background-color: #1C0139;
color: #1C0139;
border-color: #1C0139;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F1FE
100
#EDDEFC
200
#DAB9FE
300
#C087FD
400
#9D46FC
500
#7B04FB
600
#6203C9
700
#4F03A0
800
#3D027D
900
#2F065B
950
#1E0439

Contrast Checker

Text on white

18.87:1

AA Pass AAA Pass

Text on black

1.11:1

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