#51AA22#51AA22

#51AA22 is a light, vivid yellow-green. Relative luminance 0.306; OKLCH L 65.8% C 0.186 H 137.5°. Best body text is #000000 at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#51AA22
RGB	rgb(81, 170, 34)
HSL	hsl(99, 67%, 40%)
HSV	hsv(99, 80%, 67%)
CMYK	cmyk(52.4%, 0%, 80%, 33.3%)
CIE-LAB	lab(62.18, -49.55, 56.75)
CIE-LCH	lch(62.18, 75.33, 131.13°)
OKLab	oklab(65.76% -0.1374 0.1258)
OKLCH	oklch(65.76% 0.186 137.5)
XYZ	xyz(18.0562, 30.6129, 6.4705)
Luminance	0.3061 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AA22 #7B22AA

analogous

#95AA22 #51AA22 #22AA37

triadic

#51AA22 #2251AA #AA2251

tetradic

#51AA22 #2295AA #7B22AA #AA3722

square

#51AA22 #2295AA #7B22AA #AA3722

split-complementary

#51AA22 #3722AA #AA2295

monochromatic

#20440E #397718 #51AA22 #6BD633 #90E066

Accessibility & contrast

On white

2.95

#51AA22 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.12

#51AA22 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AA22

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AA22	#FFFFFF	#000000	##000000
##51AA22	1.00	2.95	7.12	7.12
#FFFFFF	2.95	1.00	21.00	21.00
#000000	7.12	21.00	1.00	1.00
##000000	7.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B09B00

Deuteranopia (green-blind)

#A49432

Tritanopia (blue-blind)

#4BA491

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #51aa22;
/* rgb */ color: rgb(81, 170, 34);
/* oklch */ color: oklch(65.8% 0.186 137.5);

Tailwind

colors: {
  custom: {
    50: '#8bc469',
    500: '#51aa22',
    950: '#000000',
  },
}

SCSS

$custom: #51aa22;
$custom-light: #8bc469;
$custom-dark: #000000;

JSON

{
  "hex": "#51aa22",
  "rgb": {
    "r": 81,
    "g": 170,
    "b": 34
  },
  "hsl": {
    "h": 99.265,
    "s": 66.667,
    "l": 40
  },
  "oklch": {
    "l": 0.65755,
    "c": 0.18632,
    "h": 137.5
  },
  "luminance": 0.30614
}

Semantic roles & 50–950 ramp

primary

#51AA22

secondary

#A362C6

accent

#3EEAAE

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AA22

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

Preview Lab → · Contrast checker → · Palette generator →