#1C243F

#1C243F

Color Values

HEX

#1C243F

RGB

28, 36, 63

HSL

226.3, 38.5%, 17.8%

HSV

226.3, 55.6%, 24.7%

CMYK

55.6%, 42.9%, 0.0%, 75.3%

OKLCH

0.2673 0.0518 270.1

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#1C243F

#3F371C

Analogous

#1C353F

#251C3F

#1C243F

Triadic

#1C243F

#3F1C24

#243F1C

Split Complementary

#1C243F

#3F251C

#353F1C

Tetradic

#1C243F

#3F1C35

#3F371C

#1C3F25

Color Blindness Simulation

Original

#1C243F

Protanopia

#1F2038

Deuteranopia

#1F1E37

Tritanopia

#1C3332

Achromatopsia

#242424

CSS Usage

background-color: #1C243F;
color: #1C243F;
border-color: #1C243F;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F5F6FA
100
#E7EAF3
200
#CED4E9
300
#AAB5D9
400
#7C8DC5
500
#4E65B1
600
#3F518D
700
#324171
800
#273258
900
#202741
950
#141929

Contrast Checker

Text on white

15.29:1

AA Pass AAA Pass

Text on black

1.37:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026