#283F3C

#283F3C

Color Values

HEX

#283F3C

RGB

40, 63, 60

HSL

172.2, 22.3%, 20.2%

HSV

172.2, 36.5%, 24.7%

CMYK

36.5%, 0.0%, 4.8%, 75.3%

OKLCH

0.3476 0.0293 185.7

Properties

Cool Dark Nearest: RAL 6004 Blue Green

Color Harmonies

Complementary

#283F3C

#3F282B

Analogous

#283F31

#28363F

#283F3C

Triadic

#283F3C

#3C283F

#3F3C28

Split Complementary

#283F3C

#3F2836

#3F3128

Tetradic

#283F3C

#31283F

#3F282B

#363F28

Color Blindness Simulation

Original

#283F3C

Protanopia

#32323D

Deuteranopia

#312F3D

Tritanopia

#293D3D

Achromatopsia

#3A3A3A

CSS Usage

background-color: #283F3C;
color: #283F3C;
border-color: #283F3C;
Nearest Tailwind: Teal 950 #042F2E

Tailwind Shades

50
#F6F9F8
100
#EAF1F0
200
#D3E3E1
300
#B4CFCC
400
#8CB6B0
500
#639C95
600
#4F7D77
700
#3F645F
800
#324E4A
900
#273A38
950
#182523

Contrast Checker

Text on white

11.25:1

AA Pass AAA Pass

Text on black

1.87:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026