#287B40

#287B40

Color Values

HEX

#287B40

RGB

40, 123, 64

HSL

137.3, 50.9%, 32.0%

HSV

137.3, 67.5%, 48.2%

CMYK

67.5%, 0.0%, 48.0%, 51.8%

OKLCH

0.5181 0.1211 149.5

Properties

Cool Dark Nearest: RAL 6032 Signal Green

Color Harmonies

Complementary

#287B40

#7B2863

Analogous

#3A7B28

#287B6A

#287B40

Triadic

#287B40

#40287B

#7B4028

Split Complementary

#287B40

#6A287B

#7B283A

Tetradic

#287B40

#283A7B

#7B2863

#7B6A28

Color Blindness Simulation

Original

#287B40

Protanopia

#4C4D4E

Deuteranopia

#474152

Tritanopia

#2C5A5C

Achromatopsia

#656565

CSS Usage

background-color: #287B40;
color: #287B40;
border-color: #287B40;
Nearest Tailwind: Green 700 #15803D

Tailwind Shades

50
#F4FBF6
100
#E5F5EA
200
#C9EDD4
300
#A3E1B5
400
#71D18C
500
#3FC064
600
#329A50
700
#287B40
800
#1F6032
900
#1A4727
950
#112D19

Contrast Checker

Text on white

5.25:1

AA Pass AAA Fail

Text on black

4.0:1

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