#51AC22#51AC22

#51AC22 is a light, vivid yellow-green. Relative luminance 0.314; OKLCH L 66.3% C 0.189 H 137.7°. Best body text is #000000 at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#51AC22
RGB	rgb(81, 172, 34)
HSL	hsl(100, 67%, 40%)
HSV	hsv(100, 80%, 67%)
CMYK	cmyk(52.9%, 0%, 80.2%, 32.5%)
CIE-LAB	lab(62.82, -50.31, 57.34)
CIE-LCH	lch(62.82, 76.28, 131.26°)
OKLab	oklab(66.28% -0.1394 0.1271)
OKLCH	oklch(66.28% 0.189 137.7)
XYZ	xyz(18.4340, 31.3685, 6.5964)
Luminance	0.3137 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AC22 #7D22AC

analogous

#96AC22 #51AC22 #22AC38

triadic

#51AC22 #2251AC #AC2251

tetradic

#51AC22 #2296AC #7D22AC #AC3822

square

#51AC22 #2296AC #7D22AC #AC3822

split-complementary

#51AC22 #3822AC #AC2296

monochromatic

#21460E #397918 #51AC22 #6CD734 #91E167

Accessibility & contrast

On white

2.89

#51AC22 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.27

#51AC22 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AC22

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AC22	#FFFFFF	#000000	##000000
##51AC22	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)

#A69532

Tritanopia (blue-blind)

#4AA693

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #51ac22;
/* rgb */ color: rgb(81, 172, 34);
/* oklch */ color: oklch(66.3% 0.189 137.7);

Tailwind

colors: {
  custom: {
    50: '#8bc569',
    500: '#51ac22',
    950: '#000000',
  },
}

SCSS

$custom: #51ac22;
$custom-light: #8bc569;
$custom-dark: #000000;

JSON

{
  "hex": "#51ac22",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 34
  },
  "hsl": {
    "h": 99.565,
    "s": 66.99,
    "l": 40.392
  },
  "oklch": {
    "l": 0.66281,
    "c": 0.18867,
    "h": 137.7
  },
  "luminance": 0.3137
}

Semantic roles & 50–950 ramp

primary

#51AC22

secondary

#A563C7

accent

#3EEAAF

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AC22

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

Preview Lab → · Contrast checker → · Palette generator →