#509D18#509D18

#509D18 is a light, vivid yellow-green. Relative luminance 0.259; OKLCH L 62.2% C 0.176 H 136.0°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#509D18
RGB	rgb(80, 157, 24)
HSL	hsl(95, 73%, 35%)
HSV	hsv(95, 85%, 62%)
CMYK	cmyk(49%, 0%, 84.7%, 38.4%)
CIE-LAB	lab(57.93, -45.31, 55.64)
CIE-LCH	lch(57.93, 71.75, 129.15°)
OKLab	oklab(62.23% -0.1265 0.1221)
OKLCH	oklch(62.23% 0.176 136)
XYZ	xyz(15.5297, 25.8843, 5.0418)
Luminance	0.2589 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509D18 #65189D

analogous

#929D18 #509D18 #189D22

triadic

#509D18 #18509D #9D1850

tetradic

#509D18 #18929D #65189D #9D2218

square

#509D18 #18929D #65189D #9D2218

split-complementary

#509D18 #22189D #9D1892

monochromatic

#1A3308 #356810 #509D18 #6BD220 #8CE44C

Accessibility & contrast

On white

3.40

#509D18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#509D18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509D18

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509D18	#FFFFFF	#000000	##000000
##509D18	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A38F00

Deuteranopia (green-blind)

#998929

Tritanopia (blue-blind)

#4C9785

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #509d18;
/* rgb */ color: rgb(80, 157, 24);
/* oklch */ color: oklch(62.2% 0.176 136.0);

Tailwind

colors: {
  custom: {
    50: '#89ba63',
    500: '#509d18',
    950: '#000000',
  },
}

SCSS

$custom: #509d18;
$custom-light: #89ba63;
$custom-dark: #000000;

JSON

{
  "hex": "#509d18",
  "rgb": {
    "r": 80,
    "g": 157,
    "b": 24
  },
  "hsl": {
    "h": 94.737,
    "s": 73.481,
    "l": 35.49
  },
  "oklch": {
    "l": 0.62228,
    "c": 0.17579,
    "h": 136
  },
  "luminance": 0.25885
}

Semantic roles & 50–950 ramp

primary

#509D18

secondary

#924BC5

accent

#38F0A2

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1206

muted

#7D817A

Preview Lab

Preview with #509D18

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

Preview Lab → · Contrast checker → · Palette generator →