#51AD22#51AD22

#51AD22 is a light, vivid yellow-green. Relative luminance 0.318; OKLCH L 66.5% C 0.190 H 137.7°. Best body text is #000000 at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#51AD22
RGB	rgb(81, 173, 34)
HSL	hsl(100, 67%, 41%)
HSV	hsv(100, 80%, 68%)
CMYK	cmyk(53.2%, 0%, 80.3%, 32.2%)
CIE-LAB	lab(63.14, -50.69, 57.64)
CIE-LCH	lch(63.14, 76.76, 131.33°)
OKLab	oklab(66.54% -0.1405 0.1277)
OKLCH	oklch(66.54% 0.19 137.7)
XYZ	xyz(18.6250, 31.7505, 6.6601)
Luminance	0.3175 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AD22 #7E22AD

analogous

#96AD22 #51AD22 #22AD38

triadic

#51AD22 #2251AD #AD2251

tetradic

#51AD22 #2296AD #7E22AD #AD3822

square

#51AD22 #2296AD #7E22AD #AD3822

split-complementary

#51AD22 #3822AD #AD2296

monochromatic

#21470E #397A18 #51AD22 #6CD735 #91E168

Accessibility & contrast

On white

2.86

#51AD22 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.35

#51AD22 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AD22

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AD22	#FFFFFF	#000000	##000000
##51AD22	1.00	2.86	7.35	7.35
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.35	21.00	1.00	1.00
##000000	7.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39E00

Deuteranopia (green-blind)

#A79632

Tritanopia (blue-blind)

#4AA794

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #51ad22;
/* rgb */ color: rgb(81, 173, 34);
/* oklch */ color: oklch(66.5% 0.190 137.7);

Tailwind

colors: {
  custom: {
    50: '#8cc669',
    500: '#51ad22',
    950: '#000000',
  },
}

SCSS

$custom: #51ad22;
$custom-light: #8cc669;
$custom-dark: #000000;

JSON

{
  "hex": "#51ad22",
  "rgb": {
    "r": 81,
    "g": 173,
    "b": 34
  },
  "hsl": {
    "h": 99.712,
    "s": 67.15,
    "l": 40.588
  },
  "oklch": {
    "l": 0.66543,
    "c": 0.18983,
    "h": 137.7
  },
  "luminance": 0.31752
}

Semantic roles & 50–950 ramp

primary

#51AD22

secondary

#A564C7

accent

#3EEAB0

background

#F9FCF6

surface

#F1F8EC

border

#CBD1C7

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AD22

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

Preview Lab → · Contrast checker → · Palette generator →