#509D1B#509D1B

#509D1B is a light, vivid yellow-green. Relative luminance 0.259; OKLCH L 62.2% C 0.175 H 136.2°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#509D1B
RGB	rgb(80, 157, 27)
HSL	hsl(96, 71%, 36%)
HSV	hsv(96, 83%, 62%)
CMYK	cmyk(49%, 0%, 82.8%, 38.4%)
CIE-LAB	lab(57.94, -45.17, 54.85)
CIE-LCH	lch(57.94, 71.05, 129.47°)
OKLab	oklab(62.24% -0.126 0.1208)
OKLCH	oklch(62.24% 0.175 136.2)
XYZ	xyz(15.5626, 25.8975, 5.2154)
Luminance	0.2590 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509D1B #681B9D

analogous

#919D1B #509D1B #1B9D27

triadic

#509D1B #1B509D #9D1B50

tetradic

#509D1B #1B919D #681B9D #9D271B

square

#509D1B #1B919D #681B9D #9D271B

split-complementary

#509D1B #271B9D #9D1B91

monochromatic

#1B3509 #356912 #509D1B #6BD124 #8CE151

Accessibility & contrast

On white

3.40

#509D1B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#509D1B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509D1B

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509D1B	#FFFFFF	#000000	##000000
##509D1B	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)

#99892B

Tritanopia (blue-blind)

#4C9786

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #509d1b;
/* rgb */ color: rgb(80, 157, 27);
/* oklch */ color: oklch(62.2% 0.175 136.2);

Tailwind

colors: {
  custom: {
    50: '#89ba64',
    500: '#509d1b',
    950: '#000000',
  },
}

SCSS

$custom: #509d1b;
$custom-light: #89ba64;
$custom-dark: #000000;

JSON

{
  "hex": "#509d1b",
  "rgb": {
    "r": 80,
    "g": 157,
    "b": 27
  },
  "hsl": {
    "h": 95.538,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.62243,
    "c": 0.17455,
    "h": 136.2
  },
  "luminance": 0.25899
}

Semantic roles & 50–950 ramp

primary

#509D1B

secondary

#9550C4

accent

#3AEDA4

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1206

muted

#7D817A

Preview Lab

Preview with #509D1B

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

Preview Lab → · Contrast checker → · Palette generator →