#51A520#51A520

#51A520 is a light, vivid yellow-green. Relative luminance 0.288; OKLCH L 64.4% C 0.181 H 137.0°. Best body text is #000000 at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#51A520
RGB	rgb(81, 165, 32)
HSL	hsl(98, 68%, 39%)
HSV	hsv(98, 81%, 65%)
CMYK	cmyk(50.9%, 0%, 80.6%, 35.3%)
CIE-LAB	lab(60.57, -47.74, 55.84)
CIE-LCH	lch(60.57, 73.47, 130.53°)
OKLab	oklab(64.43% -0.1327 0.1236)
OKLCH	oklch(64.43% 0.181 137)
XYZ	xyz(17.1087, 28.7626, 6.0164)
Luminance	0.2876 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A520 #7420A5

analogous

#93A520 #51A520 #20A531

triadic

#51A520 #2051A5 #A52051

tetradic

#51A520 #2093A5 #7420A5 #A53120

square

#51A520 #2093A5 #7420A5 #A53120

split-complementary

#51A520 #3120A5 #A52093

monochromatic

#1F3E0C #387216 #51A520 #6BD62C #8FE05F

Accessibility & contrast

On white

3.11

#51A520 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.75

#51A520 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A520

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A520	#FFFFFF	#000000	##000000
##51A520	1.00	3.11	6.75	6.75
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.75	21.00	1.00	1.00
##000000	6.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AB9600

Deuteranopia (green-blind)

#A08F30

Tritanopia (blue-blind)

#4C9F8D

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #51a520;
/* rgb */ color: rgb(81, 165, 32);
/* oklch */ color: oklch(64.4% 0.181 137.0);

Tailwind

colors: {
  custom: {
    50: '#8ac067',
    500: '#51a520',
    950: '#000000',
  },
}

SCSS

$custom: #51a520;
$custom-light: #8ac067;
$custom-dark: #000000;

JSON

{
  "hex": "#51a520",
  "rgb": {
    "r": 81,
    "g": 165,
    "b": 32
  },
  "hsl": {
    "h": 97.895,
    "s": 67.513,
    "l": 38.627
  },
  "oklch": {
    "l": 0.64427,
    "c": 0.18134,
    "h": 137
  },
  "luminance": 0.28764
}

Semantic roles & 50–950 ramp

primary

#51A520

secondary

#9E5CC5

accent

#3DEAAB

background

#F9FBF6

surface

#F1F7EB

border

#CBD0C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A520

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

Preview Lab → · Contrast checker → · Palette generator →