#428E17#428E17

#428E17 is a mid, vivid yellow-green. Relative luminance 0.206; OKLCH L 57.6% C 0.165 H 137.4°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#428E17
RGB	rgb(66, 142, 23)
HSL	hsl(98, 72%, 32%)
HSV	hsv(98, 84%, 56%)
CMYK	cmyk(53.5%, 0%, 83.8%, 44.3%)
CIE-LAB	lab(52.47, -43.78, 50.78)
CIE-LCH	lch(52.47, 67.05, 130.77°)
OKLab	oklab(57.58% -0.1215 0.1119)
OKLCH	oklch(57.58% 0.165 137.4)
XYZ	xyz(12.0740, 20.5652, 4.1437)
Luminance	0.2057 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428E17 #63178E

analogous

#7E8E17 #428E17 #178E27

triadic

#428E17 #17428E #8E1742

tetradic

#428E17 #177E8E #63178E #8E2717

square

#428E17 #177E8E #63178E #8E2717

split-complementary

#428E17 #27178E #8E177E

monochromatic

#112506 #2A590E #428E17 #5AC320 #79E03F

Accessibility & contrast

On white

4.11

#428E17 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#428E17 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E17

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428E17	#FFFFFF	#000000	##000000
##428E17	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938100

Deuteranopia (green-blind)

#897B26

Tritanopia (blue-blind)

#3D8979

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428e17;
/* rgb */ color: rgb(66, 142, 23);
/* oklch */ color: oklch(57.6% 0.165 137.4);

Tailwind

colors: {
  custom: {
    50: '#7fb060',
    500: '#428e17',
    950: '#000000',
  },
}

SCSS

$custom: #428e17;
$custom-light: #7fb060;
$custom-dark: #000000;

JSON

{
  "hex": "#428e17",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 23
  },
  "hsl": {
    "h": 98.319,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.57578,
    "c": 0.16524,
    "h": 137.4
  },
  "luminance": 0.20566
}

Semantic roles & 50–950 ramp

primary

#428E17

secondary

#9240C0

accent

#39EFAD

background

#F8FAF6

surface

#EFF5EB

border

#CACFC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428E17

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

Preview Lab → · Contrast checker → · Palette generator →