#428B40#428B40

#428B40 is a mid, vivid green. Relative luminance 0.200; OKLCH L 57.2% C 0.132 H 143.1°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#428B40
RGB	rgb(66, 139, 64)
HSL	hsl(118, 37%, 40%)
HSV	hsv(118, 54%, 55%)
CMYK	cmyk(52.5%, 0%, 54%, 45.5%)
CIE-LAB	lab(51.83, -38.75, 32.99)
CIE-LCH	lch(51.83, 50.89, 139.59°)
OKLab	oklab(57.16% -0.1054 0.0791)
OKLCH	oklch(57.16% 0.132 143.1)
XYZ	xyz(12.4042, 19.9927, 8.0548)
Luminance	0.1999 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428B40 #89408B

analogous

#688B40 #428B40 #408B64

triadic

#428B40 #40428B #8B4042

tetradic

#428B40 #40688B #89408B #8B6440

square

#428B40 #40688B #89408B #8B6440

split-complementary

#428B40 #64408B #8B4068

monochromatic

#1A3719 #2E612D #428B40 #59B257 #82C581

Accessibility & contrast

On white

4.20

#428B40 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#428B40 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428B40

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428B40	#FFFFFF	#000000	##000000
##428B40	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8E8039

Deuteranopia (green-blind)

#847945

Tritanopia (blue-blind)

#38877A

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428b40;
/* rgb */ color: rgb(66, 139, 64);
/* oklch */ color: oklch(57.2% 0.132 143.1);

Tailwind

colors: {
  custom: {
    50: '#7dad77',
    500: '#428b40',
    950: '#000000',
  },
}

SCSS

$custom: #428b40;
$custom-light: #7dad77;
$custom-dark: #000000;

JSON

{
  "hex": "#428b40",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 64
  },
  "hsl": {
    "h": 118.4,
    "s": 36.946,
    "l": 39.804
  },
  "oklch": {
    "l": 0.57161,
    "c": 0.13181,
    "h": 143.1
  },
  "luminance": 0.19994
}

Semantic roles & 50–950 ramp

primary

#428B40

secondary

#AE78AF

accent

#5BCDCA

background

#F7FAF7

surface

#EEF4ED

border

#C9CEC8

text

#0A1009

muted

#7C7F7B

Preview Lab

Preview with #428B40

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

Preview Lab → · Contrast checker → · Palette generator →