#283B52

#283B52

Color Values

HEX

#283B52

RGB

40, 59, 82

HSL

212.9, 34.4%, 23.9%

HSV

212.9, 51.2%, 32.2%

CMYK

51.2%, 28.0%, 0.0%, 67.8%

OKLCH

0.3469 0.0474 253.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#283B52

#523F28

Analogous

#285052

#2A2852

#283B52

Triadic

#283B52

#52283B

#3B5228

Split Complementary

#283B52

#522A28

#505228

Tetradic

#283B52

#522850

#523F28

#28522A

Color Blindness Simulation

Original

#283B52

Protanopia

#30304C

Deuteranopia

#2F2E4B

Tritanopia

#294847

Achromatopsia

#393939

CSS Usage

background-color: #283B52;
color: #283B52;
border-color: #283B52;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F5F7FA
100
#E8EDF2
200
#CFDAE8
300
#ADC0D7
400
#809EC1
500
#547BAB
600
#436389
700
#364F6E
800
#2A3E56
900
#212F3F
950
#151E28

Contrast Checker

Text on white

11.43:1

AA Pass AAA Pass

Text on black

1.84:1

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