#283A53

#283A53

Color Values

HEX

#283A53

RGB

40, 58, 83

HSL

214.9, 35.0%, 24.1%

HSV

214.9, 51.8%, 32.5%

CMYK

51.8%, 30.1%, 0.0%, 67.5%

OKLCH

0.3449 0.05 256.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#283A53

#534128

Analogous

#284F53

#2B2853

#283A53

Triadic

#283A53

#53283A

#3A5328

Split Complementary

#283A53

#532B28

#4F5328

Tetradic

#283A53

#53284F

#534128

#28532B

Color Blindness Simulation

Original

#283A53

Protanopia

#30304D

Deuteranopia

#2F2D4C

Tritanopia

#294847

Achromatopsia

#383838

CSS Usage

background-color: #283A53;
color: #283A53;
border-color: #283A53;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F5F7FA
100
#E8ECF2
200
#CFD9E8
300
#ACBED7
400
#809BC2
500
#5378AC
600
#42608A
700
#354D6E
800
#293C56
900
#212E40
950
#151D28

Contrast Checker

Text on white

11.54:1

AA Pass AAA Pass

Text on black

1.82:1

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