#51A223#51A223

#51A223 is a light, vivid yellow-green. Relative luminance 0.277; OKLCH L 63.7% C 0.176 H 137.0°. Best body text is #000000 at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#51A223
RGB	rgb(81, 162, 35)
HSL	hsl(98, 64%, 39%)
HSV	hsv(98, 78%, 64%)
CMYK	cmyk(50%, 0%, 78.4%, 36.5%)
CIE-LAB	lab(59.63, -46.40, 54.02)
CIE-LCH	lch(59.63, 71.21, 130.66°)
OKLab	oklab(63.65% -0.1289 0.1203)
OKLCH	oklch(63.65% 0.176 137)
XYZ	xyz(16.6165, 27.7102, 6.0628)
Luminance	0.2771 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A223 #7423A2

analogous

#90A223 #51A223 #23A234

triadic

#51A223 #2351A2 #A22351

tetradic

#51A223 #2390A2 #7423A2 #A23423

square

#51A223 #2390A2 #7423A2 #A23423

split-complementary

#51A223 #3423A2 #A22390

monochromatic

#1F3D0D #387018 #51A223 #6BD230 #8FDD62

Accessibility & contrast

On white

3.21

#51A223 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.54

#51A223 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A223

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A223	#FFFFFF	#000000	##000000
##51A223	1.00	3.21	6.54	6.54
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.54	21.00	1.00	1.00
##000000	6.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A89400

Deuteranopia (green-blind)

#9D8D31

Tritanopia (blue-blind)

#4C9C8A

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #51a223;
/* rgb */ color: rgb(81, 162, 35);
/* oklch */ color: oklch(63.7% 0.176 137.0);

Tailwind

colors: {
  custom: {
    50: '#8abe68',
    500: '#51a223',
    950: '#000000',
  },
}

SCSS

$custom: #51a223;
$custom-light: #8abe68;
$custom-dark: #000000;

JSON

{
  "hex": "#51a223",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 35
  },
  "hsl": {
    "h": 98.268,
    "s": 64.467,
    "l": 38.627
  },
  "oklch": {
    "l": 0.63654,
    "c": 0.17627,
    "h": 137
  },
  "luminance": 0.27711
}

Semantic roles & 50–950 ramp

primary

#51A223

secondary

#9E5EC2

accent

#40E7AB

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0D1207

muted

#7D817A

Preview Lab

Preview with #51A223

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

Preview Lab → · Contrast checker → · Palette generator →