#1C203B

#1C203B

Color Values

HEX

#1C203B

RGB

28, 32, 59

HSL

232.3, 35.6%, 17.1%

HSV

232.3, 52.5%, 23.1%

CMYK

52.5%, 45.8%, 0.0%, 76.9%

OKLCH

0.2544 0.0511 275.8

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#1C203B

#3B371C

Analogous

#1C303B

#281C3B

#1C203B

Triadic

#1C203B

#3B1C20

#203B1C

Split Complementary

#1C203B

#3B281C

#303B1C

Tetradic

#1C203B

#3B1C30

#3B371C

#1C3B28

Color Blindness Simulation

Original

#1C203B

Protanopia

#1E1E34

Deuteranopia

#1E1D33

Tritanopia

#1C2F2E

Achromatopsia

#212121

CSS Usage

background-color: #1C203B;
color: #1C203B;
border-color: #1C203B;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F6FA
100
#E8E9F3
200
#CFD2E8
300
#ACB2D8
400
#7F88C2
500
#525EAD
600
#424B8A
700
#353C6F
800
#292F56
900
#212540
950
#151728

Contrast Checker

Text on white

15.92:1

AA Pass AAA Pass

Text on black

1.32:1

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