#51A423#51A423

#51A423 is a light, vivid yellow-green. Relative luminance 0.284; OKLCH L 64.2% C 0.179 H 137.1°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#51A423
RGB	rgb(81, 164, 35)
HSL	hsl(99, 65%, 39%)
HSV	hsv(99, 79%, 64%)
CMYK	cmyk(50.6%, 0%, 78.7%, 35.7%)
CIE-LAB	lab(60.27, -47.18, 54.63)
CIE-LCH	lch(60.27, 72.18, 130.82°)
OKLab	oklab(64.18% -0.131 0.1215)
OKLCH	oklch(64.18% 0.179 137.1)
XYZ	xyz(16.9716, 28.4204, 6.1812)
Luminance	0.2842 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A423 #7623A4

analogous

#92A423 #51A423 #23A436

triadic

#51A423 #2351A4 #A42351

tetradic

#51A423 #2392A4 #7623A4 #A43623

square

#51A423 #2392A4 #7623A4 #A43623

split-complementary

#51A423 #3623A4 #A42392

monochromatic

#1F3F0D #387218 #51A423 #6BD331 #8FDE64

Accessibility & contrast

On white

3.14

#51A423 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#51A423 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A423

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A423	#FFFFFF	#000000	##000000
##51A423	1.00	3.14	6.68	6.68
#FFFFFF	3.14	1.00	21.00	21.00
#000000	6.68	21.00	1.00	1.00
##000000	6.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AA9600

Deuteranopia (green-blind)

#9F8F31

Tritanopia (blue-blind)

#4C9E8C

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #51a423;
/* rgb */ color: rgb(81, 164, 35);
/* oklch */ color: oklch(64.2% 0.179 137.1);

Tailwind

colors: {
  custom: {
    50: '#8ac069',
    500: '#51a423',
    950: '#000000',
  },
}

SCSS

$custom: #51a423;
$custom-light: #8ac069;
$custom-dark: #000000;

JSON

{
  "hex": "#51a423",
  "rgb": {
    "r": 81,
    "g": 164,
    "b": 35
  },
  "hsl": {
    "h": 98.605,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.64181,
    "c": 0.17868,
    "h": 137.1
  },
  "luminance": 0.28422
}

Semantic roles & 50–950 ramp

primary

#51A423

secondary

#A060C3

accent

#40E8AC

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0D1207

muted

#7D817A

Preview Lab

Preview with #51A423

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

Preview Lab → · Contrast checker → · Palette generator →