#283040

#283040

Color Values

HEX

#283040

RGB

40, 48, 64

HSL

220.0, 23.1%, 20.4%

HSV

220.0, 37.5%, 25.1%

CMYK

37.5%, 25.0%, 0.0%, 74.9%

OKLCH

0.3088 0.031 264.0

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#283040

#403828

Analogous

#283C40

#2C2840

#283040

Triadic

#283040

#402830

#304028

Split Complementary

#283040

#402C28

#3C4028

Tetradic

#283040

#40283C

#403828

#28402C

Color Blindness Simulation

Original

#283040

Protanopia

#2B2C3C

Deuteranopia

#2B2A3B

Tritanopia

#283938

Achromatopsia

#2F2F2F

CSS Usage

background-color: #283040;
color: #283040;
border-color: #283040;
Nearest Tailwind: Gray 800 #1F2937

Tailwind Shades

50
#F6F7F9
100
#EAECF1
200
#D3D9E4
300
#B4BDD0
400
#8B99B6
500
#62769D
600
#4E5E7E
700
#3F4B64
800
#313B4E
900
#262D3B
950
#181C25

Contrast Checker

Text on white

13.23:1

AA Pass AAA Pass

Text on black

1.59:1

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