#283B3E

#283B3E

Color Values

HEX

#283B3E

RGB

40, 59, 62

HSL

188.2, 21.6%, 20.0%

HSV

188.2, 35.5%, 24.3%

CMYK

35.5%, 4.8%, 0.0%, 75.7%

OKLCH

0.3373 0.0249 208.2

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#283B3E

#3E2B28

Analogous

#283E36

#28303E

#283B3E

Triadic

#283B3E

#3E283B

#3B3E28

Split Complementary

#283B3E

#3E2830

#3E3628

Tetradic

#283B3E

#36283E

#3E2B28

#303E28

Color Blindness Simulation

Original

#283B3E

Protanopia

#30303D

Deuteranopia

#2F2E3D

Tritanopia

#293D3D

Achromatopsia

#373737

CSS Usage

background-color: #283B3E;
color: #283B3E;
border-color: #283B3E;
Nearest Tailwind: Neutral 700 #404040

Tailwind Shades

50
#F6F8F9
100
#EAF0F0
200
#D4E1E3
300
#B5CBCF
400
#8CAFB5
500
#64949B
600
#50767C
700
#405E63
800
#324A4E
900
#27373A
950
#192325

Contrast Checker

Text on white

11.76:1

AA Pass AAA Pass

Text on black

1.79:1

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