#428A17#428A17

#428A17 is a mid, vivid yellow-green. Relative luminance 0.194; OKLCH L 56.5% C 0.160 H 137.0°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#428A17
RGB	rgb(66, 138, 23)
HSL	hsl(98, 71%, 32%)
HSV	hsv(98, 83%, 54%)
CMYK	cmyk(52.2%, 0%, 83.3%, 45.9%)
CIE-LAB	lab(51.15, -42.20, 49.57)
CIE-LCH	lch(51.15, 65.10, 130.41°)
OKLab	oklab(56.49% -0.1173 0.1094)
OKLCH	oklch(56.49% 0.16 137)
XYZ	xyz(11.4895, 19.3962, 3.9489)
Luminance	0.1940 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428A17 #5F178A

analogous

#7C8A17 #428A17 #178A25

triadic

#428A17 #17428A #8A1742

tetradic

#428A17 #177C8A #5F178A #8A2517

square

#428A17 #177C8A #5F178A #8A2517

split-complementary

#428A17 #25178A #8A177C

monochromatic

#102106 #29560E #428A17 #5BBE20 #79DF3D

Accessibility & contrast

On white

4.30

#428A17 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#428A17 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428A17

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428A17	#FFFFFF	#000000	##000000
##428A17	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F7E00

Deuteranopia (green-blind)

#867825

Tritanopia (blue-blind)

#3D8575

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #428a17;
/* rgb */ color: rgb(66, 138, 23);
/* oklch */ color: oklch(56.5% 0.160 137.0);

Tailwind

colors: {
  custom: {
    50: '#7ead60',
    500: '#428a17',
    950: '#000000',
  },
}

SCSS

$custom: #428a17;
$custom-light: #7ead60;
$custom-dark: #000000;

JSON

{
  "hex": "#428a17",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 23
  },
  "hsl": {
    "h": 97.565,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.56488,
    "c": 0.16041,
    "h": 137
  },
  "luminance": 0.19397
}

Semantic roles & 50–950 ramp

primary

#428A17

secondary

#8E3FBE

accent

#3AEEAB

background

#F8FAF5

surface

#EFF4EA

border

#CACEC6

text

#0B1005

muted

#7C7F79

Preview Lab

Preview with #428A17

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

Preview Lab → · Contrast checker → · Palette generator →