#283A40

#283A40

Color Values

HEX

#283A40

RGB

40, 58, 64

HSL

195.0, 23.1%, 20.4%

HSV

195.0, 37.5%, 25.1%

CMYK

37.5%, 9.4%, 0.0%, 74.9%

OKLCH

0.3355 0.0255 220.5

Properties

Cool Dark Nearest: RAL 5001 Green Blue

Color Harmonies

Complementary

#283A40

#402E28

Analogous

#28403A

#282E40

#283A40

Triadic

#283A40

#40283A

#3A4028

Split Complementary

#283A40

#40282E

#403A28

Tetradic

#283A40

#3A2840

#402E28

#2E4028

Color Blindness Simulation

Original

#283A40

Protanopia

#30303F

Deuteranopia

#2F2D3E

Tritanopia

#293D3D

Achromatopsia

#373737

CSS Usage

background-color: #283A40;
color: #283A40;
border-color: #283A40;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F6F8F9
100
#EAEFF1
200
#D3DFE4
300
#B4C9D0
400
#8BACB6
500
#628E9D
600
#4E727E
700
#3F5B64
800
#31474E
900
#26353B
950
#182225

Contrast Checker

Text on white

11.87:1

AA Pass AAA Pass

Text on black

1.77:1

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