#51AC20#51AC20

#51AC20 is a light, vivid yellow-green. Relative luminance 0.314; OKLCH L 66.3% C 0.190 H 137.5°. Best body text is #000000 at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#51AC20
RGB	rgb(81, 172, 32)
HSL	hsl(99, 69%, 40%)
HSV	hsv(99, 81%, 67%)
CMYK	cmyk(52.9%, 0%, 81.4%, 32.5%)
CIE-LAB	lab(62.81, -50.42, 57.92)
CIE-LCH	lch(62.81, 76.79, 131.04°)
OKLab	oklab(66.27% -0.1398 0.128)
OKLCH	oklch(66.27% 0.19 137.5)
XYZ	xyz(18.4060, 31.3573, 6.4489)
Luminance	0.3136 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AC20 #7B20AC

analogous

#97AC20 #51AC20 #20AC35

triadic

#51AC20 #2051AC #AC2051

tetradic

#51AC20 #2097AC #7B20AC #AC3520

square

#51AC20 #2097AC #7B20AC #AC3520

split-complementary

#51AC20 #3520AC #AC2097

monochromatic

#20450D #397816 #51AC20 #6BD931 #90E264

Accessibility & contrast

On white

2.89

#51AC20 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.27

#51AC20 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AC20

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AC20	#FFFFFF	#000000	##000000
##51AC20	1.00	2.89	7.27	7.27
#FFFFFF	2.89	1.00	21.00	21.00
#000000	7.27	21.00	1.00	1.00
##000000	7.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B29D00

Deuteranopia (green-blind)

#A69531

Tritanopia (blue-blind)

#4AA693

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #51ac20;
/* rgb */ color: rgb(81, 172, 32);
/* oklch */ color: oklch(66.3% 0.190 137.5);

Tailwind

colors: {
  custom: {
    50: '#8bc568',
    500: '#51ac20',
    950: '#000000',
  },
}

SCSS

$custom: #51ac20;
$custom-light: #8bc568;
$custom-dark: #000000;

JSON

{
  "hex": "#51ac20",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 32
  },
  "hsl": {
    "h": 99,
    "s": 68.627,
    "l": 40
  },
  "oklch": {
    "l": 0.6627,
    "c": 0.18957,
    "h": 137.5
  },
  "luminance": 0.31359
}

Semantic roles & 50–950 ramp

primary

#51AC20

secondary

#A360C7

accent

#3CEBAE

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AC20

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

Preview Lab → · Contrast checker → · Palette generator →