#509E21#509E21

#509E21 is a light, vivid yellow-green. Relative luminance 0.263; OKLCH L 62.5% C 0.173 H 136.7°. Best body text is #000000 at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#509E21
RGB	rgb(80, 158, 33)
HSL	hsl(97, 65%, 37%)
HSV	hsv(97, 79%, 62%)
CMYK	cmyk(49.4%, 0%, 79.1%, 38%)
CIE-LAB	lab(58.29, -45.24, 53.38)
CIE-LCH	lch(58.29, 69.97, 130.28°)
OKLab	oklab(62.54% -0.1258 0.1186)
OKLCH	oklch(62.54% 0.173 136.7)
XYZ	xyz(15.8092, 26.2679, 5.6757)
Luminance	0.2627 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509E21 #6F219E

analogous

#8F9E21 #509E21 #219E31

triadic

#509E21 #21509E #9E2150

tetradic

#509E21 #218F9E #6F219E #9E3121

square

#509E21 #218F9E #6F219E #9E3121

split-complementary

#509E21 #31219E #9E218F

monochromatic

#1D390C #366B16 #509E21 #6AD12C #8DDD5C

Accessibility & contrast

On white

3.36

#509E21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.25

#509E21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509E21

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509E21	#FFFFFF	#000000	##000000
##509E21	1.00	3.36	6.25	6.25
#FFFFFF	3.36	1.00	21.00	21.00
#000000	6.25	21.00	1.00	1.00
##000000	6.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A49000

Deuteranopia (green-blind)

#998A2F

Tritanopia (blue-blind)

#4C9887

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #509e21;
/* rgb */ color: rgb(80, 158, 33);
/* oklch */ color: oklch(62.5% 0.173 136.7);

Tailwind

colors: {
  custom: {
    50: '#89bb67',
    500: '#509e21',
    950: '#000000',
  },
}

SCSS

$custom: #509e21;
$custom-light: #89bb67;
$custom-dark: #000000;

JSON

{
  "hex": "#509e21",
  "rgb": {
    "r": 80,
    "g": 158,
    "b": 33
  },
  "hsl": {
    "h": 97.44,
    "s": 65.445,
    "l": 37.451
  },
  "oklch": {
    "l": 0.6254,
    "c": 0.17294,
    "h": 136.7
  },
  "luminance": 0.26269
}

Semantic roles & 50–950 ramp

primary

#509E21

secondary

#9A59C1

accent

#3FE8A9

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1206

muted

#7D817A

Preview Lab

Preview with #509E21

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

Preview Lab → · Contrast checker → · Palette generator →