#509B18#509B18

#509B18 is a mid, vivid yellow-green. Relative luminance 0.252; OKLCH L 61.7% C 0.173 H 135.8°. Best body text is #000000 at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#509B18
RGB	rgb(80, 155, 24)
HSL	hsl(94, 73%, 35%)
HSV	hsv(94, 85%, 61%)
CMYK	cmyk(48.4%, 0%, 84.5%, 39.2%)
CIE-LAB	lab(57.28, -44.51, 55.06)
CIE-LCH	lch(57.28, 70.81, 128.95°)
OKLab	oklab(61.7% -0.1244 0.1209)
OKLCH	oklch(61.7% 0.173 135.8)
XYZ	xyz(15.1941, 25.2131, 4.9300)
Luminance	0.2521 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509B18 #63189B

analogous

#919B18 #509B18 #189B21

triadic

#509B18 #18509B #9B1850

tetradic

#509B18 #18919B #63189B #9B2118

square

#509B18 #18919B #63189B #9B2118

split-complementary

#509B18 #21189B #9B1891

monochromatic

#193108 #356610 #509B18 #6BD020 #8CE34A

Accessibility & contrast

On white

3.48

#509B18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.04

#509B18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509B18

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509B18	#FFFFFF	#000000	##000000
##509B18	1.00	3.48	6.04	6.04
#FFFFFF	3.48	1.00	21.00	21.00
#000000	6.04	21.00	1.00	1.00
##000000	6.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A18D00

Deuteranopia (green-blind)

#978729

Tritanopia (blue-blind)

#4D9584

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #509b18;
/* rgb */ color: rgb(80, 155, 24);
/* oklch */ color: oklch(61.7% 0.173 135.8);

Tailwind

colors: {
  custom: {
    50: '#89b963',
    500: '#509b18',
    950: '#000000',
  },
}

SCSS

$custom: #509b18;
$custom-light: #89b963;
$custom-dark: #000000;

JSON

{
  "hex": "#509b18",
  "rgb": {
    "r": 80,
    "g": 155,
    "b": 24
  },
  "hsl": {
    "h": 94.351,
    "s": 73.184,
    "l": 35.098
  },
  "oklch": {
    "l": 0.61698,
    "c": 0.17341,
    "h": 135.8
  },
  "luminance": 0.25214
}

Semantic roles & 50–950 ramp

primary

#509B18

secondary

#904AC5

accent

#38F0A1

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #509B18

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

Preview Lab → · Contrast checker → · Palette generator →