#509F21#509F21

#509F21 is a light, vivid yellow-green. Relative luminance 0.266; OKLCH L 62.8% C 0.174 H 136.8°. Best body text is #000000 at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#509F21
RGB	rgb(80, 159, 33)
HSL	hsl(98, 66%, 38%)
HSV	hsv(98, 79%, 62%)
CMYK	cmyk(49.7%, 0%, 79.2%, 37.6%)
CIE-LAB	lab(58.61, -45.64, 53.68)
CIE-LCH	lch(58.61, 70.46, 130.37°)
OKLab	oklab(62.81% -0.1269 0.1193)
OKLCH	oklch(62.81% 0.174 136.8)
XYZ	xyz(15.9804, 26.6104, 5.7328)
Luminance	0.2661 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509F21 #70219F

analogous

#8F9F21 #509F21 #219F31

triadic

#509F21 #21509F #9F2150

tetradic

#509F21 #218F9F #70219F #9F3121

square

#509F21 #218F9F #70219F #9F3121

split-complementary

#509F21 #31219F #9F218F

monochromatic

#1D3A0C #366C16 #509F21 #6AD22C #8DDD5D

Accessibility & contrast

On white

3.32

#509F21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.32

#509F21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509F21

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509F21	#FFFFFF	#000000	##000000
##509F21	1.00	3.32	6.32	6.32
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.32	21.00	1.00	1.00
##000000	6.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A59100

Deuteranopia (green-blind)

#9A8B2F

Tritanopia (blue-blind)

#4C9988

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #509f21;
/* rgb */ color: rgb(80, 159, 33);
/* oklch */ color: oklch(62.8% 0.174 136.8);

Tailwind

colors: {
  custom: {
    50: '#89bc67',
    500: '#509f21',
    950: '#000000',
  },
}

SCSS

$custom: #509f21;
$custom-light: #89bc67;
$custom-dark: #000000;

JSON

{
  "hex": "#509f21",
  "rgb": {
    "r": 80,
    "g": 159,
    "b": 33
  },
  "hsl": {
    "h": 97.619,
    "s": 65.625,
    "l": 37.647
  },
  "oklch": {
    "l": 0.62805,
    "c": 0.17415,
    "h": 136.8
  },
  "luminance": 0.26612
}

Semantic roles & 50–950 ramp

primary

#509F21

secondary

#9B5AC2

accent

#3FE9A9

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1206

muted

#7D817A

Preview Lab

Preview with #509F21

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

Preview Lab → · Contrast checker → · Palette generator →