#283941

#283941

Color Values

HEX

#283941

RGB

40, 57, 65

HSL

199.2, 23.8%, 20.6%

HSV

199.2, 38.5%, 25.5%

CMYK

38.5%, 12.3%, 0.0%, 74.5%

OKLCH

0.3332 0.0262 228.6

Properties

Cool Dark Nearest: RAL 5001 Green Blue

Color Harmonies

Complementary

#283941

#413028

Analogous

#28413D

#282D41

#283941

Triadic

#283941

#412839

#394128

Split Complementary

#283941

#41282D

#413D28

Tetradic

#283941

#3D2841

#413028

#2D4128

Color Blindness Simulation

Original

#283941

Protanopia

#2F303F

Deuteranopia

#2E2D3F

Tritanopia

#293E3D

Achromatopsia

#363636

CSS Usage

background-color: #283941;
color: #283941;
border-color: #283941;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F8F9
100
#EAEEF1
200
#D3DEE4
300
#B3C7D0
400
#8AA9B7
500
#618A9E
600
#4E6F7E
700
#3E5965
800
#31454F
900
#26343B
950
#182125

Contrast Checker

Text on white

11.99:1

AA Pass AAA Pass

Text on black

1.75:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026