#51A820#51A820

#51A820 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	#51A820
RGB	rgb(81, 168, 32)
HSL	hsl(98, 68%, 39%)
HSV	hsv(98, 81%, 66%)
CMYK	cmyk(51.8%, 0%, 81%, 34.1%)
CIE-LAB	lab(61.53, -48.89, 56.74)
CIE-LCH	lch(61.53, 74.90, 130.75°)
OKLab	oklab(65.22% -0.1358 0.1255)
OKLCH	oklch(65.22% 0.185 137.2)
XYZ	xyz(17.6561, 29.8576, 6.1989)
Luminance	0.2986 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A820 #7720A8

analogous

#95A820 #51A820 #20A833

triadic

#51A820 #2051A8 #A82051

tetradic

#51A820 #2095A8 #7720A8 #A83320

square

#51A820 #2095A8 #7720A8 #A83320

split-complementary

#51A820 #3320A8 #A82095

monochromatic

#1F410C #387516 #51A820 #6BD72E #8FE161

Accessibility & contrast

On white

3.01

#51A820 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.97

#51A820 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A820

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A820	#FFFFFF	#000000	##000000
##51A820	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: #51a820;
/* rgb */ color: rgb(81, 168, 32);
/* oklch */ color: oklch(65.2% 0.185 137.2);

Tailwind

colors: {
  custom: {
    50: '#8bc268',
    500: '#51a820',
    950: '#000000',
  },
}

SCSS

$custom: #51a820;
$custom-light: #8bc268;
$custom-dark: #000000;

JSON

{
  "hex": "#51a820",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 32
  },
  "hsl": {
    "h": 98.382,
    "s": 68,
    "l": 39.216
  },
  "oklch": {
    "l": 0.65218,
    "c": 0.18489,
    "h": 137.2
  },
  "luminance": 0.29859
}

Semantic roles & 50–950 ramp

primary

#51A820

secondary

#A05EC6

accent

#3DEBAC

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A820

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

Preview Lab → · Contrast checker → · Palette generator →