#428F19#428F19

#428F19 is a mid, vivid yellow-green. Relative luminance 0.209; OKLCH L 57.9% C 0.166 H 137.6°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#428F19
RGB	rgb(66, 143, 25)
HSL	hsl(99, 70%, 33%)
HSV	hsv(99, 83%, 56%)
CMYK	cmyk(53.8%, 0%, 82.5%, 43.9%)
CIE-LAB	lab(52.81, -44.07, 50.51)
CIE-LCH	lch(52.81, 67.03, 131.10°)
OKLab	oklab(57.86% -0.1222 0.1117)
OKLCH	oklch(57.86% 0.166 137.6)
XYZ	xyz(12.2443, 20.8724, 4.3031)
Luminance	0.2087 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F19 #66198F

analogous

#7D8F19 #428F19 #198F2B

triadic

#428F19 #19428F #8F1942

tetradic

#428F19 #197D8F #66198F #8F2B19

square

#428F19 #197D8F #66198F #8F2B19

split-complementary

#428F19 #2B198F #8F197D

monochromatic

#122707 #2A5B10 #428F19 #5AC322 #7ADE44

Accessibility & contrast

On white

4.06

#428F19 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#428F19 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F19

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F19	#FFFFFF	#000000	##000000
##428F19	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8A7C27

Tritanopia (blue-blind)

#3C8A7A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #428f19;
/* rgb */ color: rgb(66, 143, 25);
/* oklch */ color: oklch(57.9% 0.166 137.6);

Tailwind

colors: {
  custom: {
    50: '#7fb061',
    500: '#428f19',
    950: '#000000',
  },
}

SCSS

$custom: #428f19;
$custom-light: #7fb061;
$custom-dark: #000000;

JSON

{
  "hex": "#428f19",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 25
  },
  "hsl": {
    "h": 99.153,
    "s": 70.238,
    "l": 32.941
  },
  "oklch": {
    "l": 0.57861,
    "c": 0.16554,
    "h": 137.6
  },
  "luminance": 0.20873
}

Semantic roles & 50–950 ramp

primary

#428F19

secondary

#9544BF

accent

#3BEDAF

background

#F8FAF6

surface

#EFF5EB

border

#CACFC6

text

#0B1105

muted

#7C807A

Preview Lab

Preview with #428F19

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

Preview Lab → · Contrast checker → · Palette generator →