#11243C

#11243C

Color Values

HEX

#11243C

RGB

17, 36, 60

HSL

213.5, 55.8%, 15.1%

HSV

213.5, 71.7%, 23.5%

CMYK

71.7%, 40.0%, 0.0%, 76.5%

OKLCH

0.2577 0.052 255.1

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#11243C

#3C2911

Analogous

#11393C

#14113C

#11243C

Triadic

#11243C

#3C1124

#243C11

Split Complementary

#11243C

#3C1411

#393C11

Tetradic

#11243C

#3C1139

#3C2911

#113C14

Color Blindness Simulation

Original

#11243C

Protanopia

#191936

Deuteranopia

#181735

Tritanopia

#123231

Achromatopsia

#222222

CSS Usage

background-color: #11243C;
color: #11243C;
border-color: #11243C;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F4F7FB
100
#E5ECF6
200
#C7D9EF
300
#A0BEE4
400
#6C9BD5
500
#3877C7
600
#2D5F9F
700
#244C7F
800
#1C3C63
900
#182E49
950
#0F1D2E

Contrast Checker

Text on white

15.65:1

AA Pass AAA Pass

Text on black

1.34:1

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