#428E57#428E57

#428E57 is a mid, moderate green. Relative luminance 0.212; OKLCH L 58.4% C 0.113 H 150.5°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#428E57
RGB	rgb(66, 142, 87)
HSL	hsl(137, 37%, 41%)
HSV	hsv(137, 54%, 56%)
CMYK	cmyk(53.5%, 0%, 38.7%, 44.3%)
CIE-LAB	lab(53.16, -36.33, 22.33)
CIE-LCH	lch(53.16, 42.64, 148.42°)
OKLab	oklab(58.37% -0.0986 0.0557)
OKLCH	oklch(58.37% 0.113 150.5)
XYZ	xyz(13.6391, 21.1912, 12.3866)
Luminance	0.2119 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428E57 #8E4279

analogous

#538E42 #428E57 #428E7D

triadic

#428E57 #57428E #8E5742

tetradic

#428E57 #42538E #8E4279 #8E7D42

square

#428E57 #42538E #8E4279 #8E7D42

split-complementary

#428E57 #7D428E #8E4253

monochromatic

#1B3A24 #2F643D #428E57 #5BB373 #84C697

Accessibility & contrast

On white

4.01

#428E57 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#428E57 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E57

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428E57	#FFFFFF	#000000	##000000
##428E57	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F8353

Deuteranopia (green-blind)

#847C5A

Tritanopia (blue-blind)

#318C80

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #428e57;
/* rgb */ color: rgb(66, 142, 87);
/* oklch */ color: oklch(58.4% 0.113 150.5);

Tailwind

colors: {
  custom: {
    50: '#7cb087',
    500: '#428e57',
    950: '#000000',
  },
}

SCSS

$custom: #428e57;
$custom-light: #7cb087;
$custom-dark: #000000;

JSON

{
  "hex": "#428e57",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 87
  },
  "hsl": {
    "h": 136.579,
    "s": 36.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.58366,
    "c": 0.11322,
    "h": 150.5
  },
  "luminance": 0.21192
}

Semantic roles & 50–950 ramp

primary

#428E57

secondary

#B17BA2

accent

#5BADCD

background

#F7FAF8

surface

#EEF5EF

border

#C9CFCA

text

#0A100B

muted

#7C7F7C

Preview Lab

Preview with #428E57

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →