#030128

#030128

Color Values

HEX

#030128

RGB

3, 1, 40

HSL

243.1, 95.1%, 8.0%

HSV

243.1, 97.5%, 15.7%

CMYK

92.5%, 97.5%, 0.0%, 84.3%

OKLCH

0.134 0.081 272.0

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#030128

#262801

Analogous

#011228

#160128

#030128

Triadic

#030128

#280301

#012803

Split Complementary

#030128

#281601

#122801

Tetradic

#030128

#280112

#262801

#012816

Color Blindness Simulation

Original

#030128

Protanopia

#02021F

Deuteranopia

#02021C

Tritanopia

#031715

Achromatopsia

#040404

CSS Usage

background-color: #030128;
color: #030128;
border-color: #030128;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F2F1FE
100
#E0DFFC
200
#BDB9FD
300
#8E88FC
400
#5047FA
500
#1306F9
600
#0F05C7
700
#0C049F
800
#09037C
900
#0B075A
950
#070439

Contrast Checker

Text on white

20.21:1

AA Pass AAA Pass

Text on black

1.04:1

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