#283931

#283931

Color Values

HEX

#283931

RGB

40, 57, 49

HSL

151.8, 17.5%, 19.0%

HSV

151.8, 29.8%, 22.4%

CMYK

29.8%, 0.0%, 14.0%, 77.6%

OKLCH

0.3269 0.0263 164.3

Properties

Cool Dark Nearest: RAL 6009 Fir Green

Color Harmonies

Complementary

#283931

#392830

Analogous

#283928

#283839

#283931

Triadic

#283931

#312839

#393128

Split Complementary

#283931

#392838

#392828

Tetradic

#283931

#282839

#392830

#383928

Color Blindness Simulation

Original

#283931

Protanopia

#2F3033

Deuteranopia

#2E2D33

Tritanopia

#293435

Achromatopsia

#353535

CSS Usage

background-color: #283931;
color: #283931;
border-color: #283931;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F6F8F7
100
#EAF0ED
200
#D5E2DC
300
#B7CDC2
400
#90B1A2
500
#699681
600
#547867
700
#436052
800
#354B40
900
#293831
950
#1A231F

Contrast Checker

Text on white

12.21:1

AA Pass AAA Pass

Text on black

1.72:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026