#51AE20#51AE20

#51AE20 is a light, vivid yellow-green. Relative luminance 0.321; OKLCH L 66.8% C 0.192 H 137.7°. Best body text is #000000 at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#51AE20
RGB	rgb(81, 174, 32)
HSL	hsl(99, 69%, 40%)
HSV	hsv(99, 82%, 68%)
CMYK	cmyk(53.4%, 0%, 81.6%, 31.8%)
CIE-LAB	lab(63.45, -51.17, 58.50)
CIE-LCH	lch(63.45, 77.72, 131.17°)
OKLab	oklab(66.8% -0.1419 0.1292)
OKLCH	oklch(66.8% 0.192 137.7)
XYZ	xyz(18.7895, 32.1243, 6.5767)
Luminance	0.3213 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AE20 #7D20AE

analogous

#98AE20 #51AE20 #20AE36

triadic

#51AE20 #2051AE #AE2051

tetradic

#51AE20 #2098AE #7D20AE #AE3620

square

#51AE20 #2098AE #7D20AE #AE3620

split-complementary

#51AE20 #3620AE #AE2098

monochromatic

#21470D #397A16 #51AE20 #6CD932 #91E366

Accessibility & contrast

On white

2.83

#51AE20 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.43

#51AE20 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AE20

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AE20	#FFFFFF	#000000	##000000
##51AE20	1.00	2.83	7.43	7.43
#FFFFFF	2.83	1.00	21.00	21.00
#000000	7.43	21.00	1.00	1.00
##000000	7.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B49E00

Deuteranopia (green-blind)

#A89731

Tritanopia (blue-blind)

#4AA894

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #51ae20;
/* rgb */ color: rgb(81, 174, 32);
/* oklch */ color: oklch(66.8% 0.192 137.7);

Tailwind

colors: {
  custom: {
    50: '#8cc769',
    500: '#51ae20',
    950: '#000000',
  },
}

SCSS

$custom: #51ae20;
$custom-light: #8cc769;
$custom-dark: #000000;

JSON

{
  "hex": "#51ae20",
  "rgb": {
    "r": 81,
    "g": 174,
    "b": 32
  },
  "hsl": {
    "h": 99.296,
    "s": 68.932,
    "l": 40.392
  },
  "oklch": {
    "l": 0.66795,
    "c": 0.19189,
    "h": 137.7
  },
  "luminance": 0.32126
}

Semantic roles & 50–950 ramp

primary

#51AE20

secondary

#A562C8

accent

#3CECAF

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AE20

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

Preview Lab → · Contrast checker → · Palette generator →