#428C17#428C17

#428C17 is a mid, vivid yellow-green. Relative luminance 0.200; OKLCH L 57.0% C 0.163 H 137.2°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#428C17
RGB	rgb(66, 140, 23)
HSL	hsl(98, 72%, 32%)
HSV	hsv(98, 84%, 55%)
CMYK	cmyk(52.9%, 0%, 83.6%, 45.1%)
CIE-LAB	lab(51.81, -43.00, 50.18)
CIE-LCH	lch(51.81, 66.08, 130.59°)
OKLab	oklab(57.03% -0.1194 0.1107)
OKLCH	oklch(57.03% 0.163 137.2)
XYZ	xyz(11.7791, 19.9754, 4.0454)
Luminance	0.1998 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C17 #61178C

analogous

#7D8C17 #428C17 #178C27

triadic

#428C17 #17428C #8C1742

tetradic

#428C17 #177D8C #61178C #8C2717

square

#428C17 #177D8C #61178C #8C2717

split-complementary

#428C17 #27178C #8C177D

monochromatic

#102306 #29570E #428C17 #5BC120 #79DF3E

Accessibility & contrast

On white

4.20

#428C17 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#428C17 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C17

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C17	#FFFFFF	#000000	##000000
##428C17	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)

#917F00

Deuteranopia (green-blind)

#877925

Tritanopia (blue-blind)

#3D8777

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #428c17;
/* rgb */ color: rgb(66, 140, 23);
/* oklch */ color: oklch(57.0% 0.163 137.2);

Tailwind

colors: {
  custom: {
    50: '#7fae60',
    500: '#428c17',
    950: '#000000',
  },
}

SCSS

$custom: #428c17;
$custom-light: #7fae60;
$custom-dark: #000000;

JSON

{
  "hex": "#428c17",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 23
  },
  "hsl": {
    "h": 97.949,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.57033,
    "c": 0.16283,
    "h": 137.2
  },
  "luminance": 0.19976
}

Semantic roles & 50–950 ramp

primary

#428C17

secondary

#903FBF

accent

#39EFAC

background

#F8FAF5

surface

#EFF4EA

border

#CACEC6

text

#0B1005

muted

#7C7F79

Preview Lab

Preview with #428C17

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

Preview Lab → · Contrast checker → · Palette generator →