#283C47

#283C47

Color Values

HEX

#283C47

RGB

40, 60, 71

HSL

201.3, 27.9%, 21.8%

HSV

201.3, 43.7%, 27.8%

CMYK

43.7%, 15.5%, 0.0%, 72.2%

OKLCH

0.344 0.0319 233.0

Properties

Cool Dark Nearest: RAL 5001 Green Blue

Color Harmonies

Complementary

#283C47

#473328

Analogous

#284743

#282D47

#283C47

Triadic

#283C47

#47283C

#3C4728

Split Complementary

#283C47

#47282D

#474328

Tetradic

#283C47

#432847

#473328

#2D4728

Color Blindness Simulation

Original

#283C47

Protanopia

#313144

Deuteranopia

#302E44

Tritanopia

#294242

Achromatopsia

#393939

CSS Usage

background-color: #283C47;
color: #283C47;
border-color: #283C47;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F8F9
100
#E9EEF1
200
#D1DEE5
300
#B1C7D3
400
#86A8BB
500
#5C8AA3
600
#4A6E82
700
#3B5868
800
#2E4552
900
#24343D
950
#172126

Contrast Checker

Text on white

11.49:1

AA Pass AAA Pass

Text on black

1.83:1

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