#509A21#509A21

#509A21 is a mid, vivid yellow-green. Relative luminance 0.249; OKLCH L 61.5% C 0.168 H 136.3°. Best body text is #000000 at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#509A21
RGB	rgb(80, 154, 33)
HSL	hsl(97, 65%, 37%)
HSV	hsv(97, 79%, 60%)
CMYK	cmyk(48.1%, 0%, 78.6%, 39.6%)
CIE-LAB	lab(57.00, -43.64, 52.15)
CIE-LCH	lch(57.00, 68.00, 129.92°)
OKLab	oklab(61.48% -0.1215 0.1161)
OKLCH	oklch(61.48% 0.168 136.3)
XYZ	xyz(15.1380, 24.9255, 5.4520)
Luminance	0.2493 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#509A21 #6B219A

analogous

#8D9A21 #509A21 #219A2E

triadic

#509A21 #21509A #9A2150

tetradic

#509A21 #218D9A #6B219A #9A2E21

square

#509A21 #218D9A #6B219A #9A2E21

split-complementary

#509A21 #2E219A #9A218D

monochromatic

#1C350B #366816 #509A21 #6ACC2C #8CDC5A

Accessibility & contrast

On white

3.51

#509A21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.99

#509A21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #509A21

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##509A21	#FFFFFF	#000000	##000000
##509A21	1.00	3.51	5.99	5.99
#FFFFFF	3.51	1.00	21.00	21.00
#000000	5.99	21.00	1.00	1.00
##000000	5.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A08D00

Deuteranopia (green-blind)

#96872E

Tritanopia (blue-blind)

#4C9483

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #509a21;
/* rgb */ color: rgb(80, 154, 33);
/* oklch */ color: oklch(61.5% 0.168 136.3);

Tailwind

colors: {
  custom: {
    50: '#88b866',
    500: '#509a21',
    950: '#000000',
  },
}

SCSS

$custom: #509a21;
$custom-light: #88b866;
$custom-dark: #000000;

JSON

{
  "hex": "#509a21",
  "rgb": {
    "r": 80,
    "g": 154,
    "b": 33
  },
  "hsl": {
    "h": 96.694,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.61482,
    "c": 0.16805,
    "h": 136.3
  },
  "luminance": 0.24926
}

Semantic roles & 50–950 ramp

primary

#509A21

secondary

#9757C0

accent

#40E8A7

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0C1106

muted

#7D807A

Preview Lab

Preview with #509A21

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

Preview Lab → · Contrast checker → · Palette generator →