#428C57#428C57

#428C57 is a mid, moderate green. Relative luminance 0.206; OKLCH L 57.8% C 0.110 H 150.9°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#428C57
RGB	rgb(66, 140, 87)
HSL	hsl(137, 36%, 40%)
HSV	hsv(137, 53%, 55%)
CMYK	cmyk(52.9%, 0%, 37.9%, 45.1%)
CIE-LAB	lab(52.51, -35.43, 21.47)
CIE-LCH	lch(52.51, 41.43, 148.79°)
OKLab	oklab(57.84% -0.0962 0.0537)
OKLCH	oklch(57.84% 0.11 150.9)
XYZ	xyz(13.3442, 20.6014, 12.2883)
Luminance	0.2060 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C57 #8C4277

analogous

#528C42 #428C57 #428C7C

triadic

#428C57 #57428C #8C5742

tetradic

#428C57 #42528C #8C4277 #8C7C42

square

#428C57 #42528C #8C4277 #8C7C42

split-complementary

#428C57 #7C428C #8C4252

monochromatic

#1B3923 #2E623D #428C57 #5AB173 #84C596

Accessibility & contrast

On white

4.10

#428C57 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#428C57 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C57

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C57	#FFFFFF	#000000	##000000
##428C57	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D8253

Deuteranopia (green-blind)

#827A5A

Tritanopia (blue-blind)

#318A7F

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428c57;
/* rgb */ color: rgb(66, 140, 87);
/* oklch */ color: oklch(57.8% 0.110 150.9);

Tailwind

colors: {
  custom: {
    50: '#7cae87',
    500: '#428c57',
    950: '#000000',
  },
}

SCSS

$custom: #428c57;
$custom-light: #7cae87;
$custom-dark: #000000;

JSON

{
  "hex": "#428c57",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 87
  },
  "hsl": {
    "h": 137.027,
    "s": 35.922,
    "l": 40.392
  },
  "oklch": {
    "l": 0.57836,
    "c": 0.11017,
    "h": 150.9
  },
  "luminance": 0.20603
}

Semantic roles & 50–950 ramp

primary

#428C57

secondary

#B07AA0

accent

#5CACCC

background

#F7FAF8

surface

#EEF4EF

border

#C9CECA

text

#0A100B

muted

#7C7F7C

Preview Lab

Preview with #428C57

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

Preview Lab → · Contrast checker → · Palette generator →