#428D40#428D40

#428D40 is a mid, vivid green. Relative luminance 0.206; OKLCH L 57.7% C 0.135 H 143.1°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#428D40
RGB	rgb(66, 141, 64)
HSL	hsl(118, 38%, 40%)
HSV	hsv(118, 55%, 55%)
CMYK	cmyk(53.2%, 0%, 54.6%, 44.7%)
CIE-LAB	lab(52.48, -39.59, 33.78)
CIE-LCH	lch(52.48, 52.05, 139.53°)
OKLab	oklab(57.7% -0.1077 0.0808)
OKLCH	oklch(57.7% 0.135 143.1)
XYZ	xyz(12.6964, 20.5772, 8.1522)
Luminance	0.2058 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428D40 #8B408D

analogous

#688D40 #428D40 #408D65

triadic

#428D40 #40428D #8D4042

tetradic

#428D40 #40688D #8B408D #8D6540

square

#428D40 #40688D #8B408D #8D6540

split-complementary

#428D40 #65408D #8D4068

monochromatic

#1B391A #2E632D #428D40 #5AB357 #83C681

Accessibility & contrast

On white

4.11

#428D40 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#428D40 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428D40

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428D40	#FFFFFF	#000000	##000000
##428D40	1.00	4.11	5.12	5.12
#FFFFFF	4.11	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)

#908139

Deuteranopia (green-blind)

#867B46

Tritanopia (blue-blind)

#37897C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428d40;
/* rgb */ color: rgb(66, 141, 64);
/* oklch */ color: oklch(57.7% 0.135 143.1);

Tailwind

colors: {
  custom: {
    50: '#7daf77',
    500: '#428d40',
    950: '#000000',
  },
}

SCSS

$custom: #428d40;
$custom-light: #7daf77;
$custom-dark: #000000;

JSON

{
  "hex": "#428d40",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 64
  },
  "hsl": {
    "h": 118.442,
    "s": 37.561,
    "l": 40.196
  },
  "oklch": {
    "l": 0.57699,
    "c": 0.13469,
    "h": 143.1
  },
  "luminance": 0.20578
}

Semantic roles & 50–950 ramp

primary

#428D40

secondary

#AF78B0

accent

#5ACECB

background

#F7FAF7

surface

#EEF4ED

border

#C9CEC8

text

#0A1009

muted

#7C7F7B

Preview Lab

Preview with #428D40

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

Preview Lab → · Contrast checker → · Palette generator →