#428D18#428D18

#428D18 is a mid, vivid yellow-green. Relative luminance 0.203; OKLCH L 57.3% C 0.164 H 137.3°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#428D18
RGB	rgb(66, 141, 24)
HSL	hsl(98, 71%, 32%)
HSV	hsv(98, 83%, 55%)
CMYK	cmyk(53.2%, 0%, 83%, 44.7%)
CIE-LAB	lab(52.14, -43.34, 50.19)
CIE-LCH	lch(52.14, 66.32, 130.81°)
OKLab	oklab(57.31% -0.1203 0.1109)
OKLCH	oklch(57.31% 0.164 137.3)
XYZ	xyz(11.9361, 20.2731, 4.1481)
Luminance	0.2027 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428D18 #63188D

analogous

#7C8D18 #428D18 #188D29

triadic

#428D18 #18428D #8D1842

tetradic

#428D18 #187C8D #63188D #8D2918

square

#428D18 #187C8D #63188D #8D2918

split-complementary

#428D18 #29188D #8D187C

monochromatic

#112406 #2A590F #428D18 #5AC121 #79DF41

Accessibility & contrast

On white

4.15

#428D18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#428D18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428D18

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428D18	#FFFFFF	#000000	##000000
##428D18	1.00	4.15	5.05	5.05
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#928000

Deuteranopia (green-blind)

#887A26

Tritanopia (blue-blind)

#3D8878

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428d18;
/* rgb */ color: rgb(66, 141, 24);
/* oklch */ color: oklch(57.3% 0.164 137.3);

Tailwind

colors: {
  custom: {
    50: '#7faf60',
    500: '#428d18',
    950: '#000000',
  },
}

SCSS

$custom: #428d18;
$custom-light: #7faf60;
$custom-dark: #000000;

JSON

{
  "hex": "#428d18",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 24
  },
  "hsl": {
    "h": 98.462,
    "s": 70.909,
    "l": 32.353
  },
  "oklch": {
    "l": 0.57311,
    "c": 0.16359,
    "h": 137.3
  },
  "luminance": 0.20274
}

Semantic roles & 50–950 ramp

primary

#428D18

secondary

#9242BF

accent

#3AEEAD

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428D18

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

Preview Lab → · Contrast checker → · Palette generator →