#51A81F#51A81F

#51A81F is a light, vivid yellow-green. Relative luminance 0.299; OKLCH L 65.2% C 0.185 H 137.2°. Best body text is #000000 at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#51A81F
RGB	rgb(81, 168, 31)
HSL	hsl(98, 69%, 39%)
HSV	hsv(98, 82%, 66%)
CMYK	cmyk(51.8%, 0%, 81.5%, 34.1%)
CIE-LAB	lab(61.53, -48.95, 57.02)
CIE-LCH	lch(61.53, 75.15, 130.64°)
OKLab	oklab(65.21% -0.1359 0.126)
OKLCH	oklch(65.21% 0.185 137.2)
XYZ	xyz(17.6427, 29.8522, 6.1284)
Luminance	0.2985 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A81F #761FA8

analogous

#96A81F #51A81F #1FA832

triadic

#51A81F #1F51A8 #A81F51

tetradic

#51A81F #1F96A8 #761FA8 #A8321F

square

#51A81F #1F96A8 #761FA8 #A8321F

split-complementary

#51A81F #321FA8 #A81F96

monochromatic

#1F410C #387415 #51A81F #6BD82C #8FE260

Accessibility & contrast

On white

3.01

#51A81F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.97

#51A81F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A81F

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A81F	#FFFFFF	#000000	##000000
##51A81F	1.00	3.01	6.97	6.97
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.97	21.00	1.00	1.00
##000000	6.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AE9900

Deuteranopia (green-blind)

#A39230

Tritanopia (blue-blind)

#4BA28F

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #51a81f;
/* rgb */ color: rgb(81, 168, 31);
/* oklch */ color: oklch(65.2% 0.185 137.2);

Tailwind

colors: {
  custom: {
    50: '#8bc267',
    500: '#51a81f',
    950: '#000000',
  },
}

SCSS

$custom: #51a81f;
$custom-light: #8bc267;
$custom-dark: #000000;

JSON

{
  "hex": "#51a81f",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 31
  },
  "hsl": {
    "h": 98.102,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.65212,
    "c": 0.18533,
    "h": 137.2
  },
  "luminance": 0.29854
}

Semantic roles & 50–950 ramp

primary

#51A81F

secondary

#A05DC6

accent

#3CECAC

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A81F

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

Preview Lab → · Contrast checker → · Palette generator →