#51A823#51A823

#51A823 is a light, vivid yellow-green. Relative luminance 0.299; OKLCH L 65.2% C 0.183 H 137.4°. Best body text is #000000 at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#51A823
RGB	rgb(81, 168, 35)
HSL	hsl(99, 66%, 40%)
HSV	hsv(99, 79%, 66%)
CMYK	cmyk(51.8%, 0%, 79.2%, 34.1%)
CIE-LAB	lab(61.55, -48.73, 55.84)
CIE-LCH	lch(61.55, 74.11, 131.11°)
OKLab	oklab(65.23% -0.1351 0.1241)
OKLCH	oklch(65.23% 0.183 137.4)
XYZ	xyz(17.6988, 29.8746, 6.4235)
Luminance	0.2988 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A823 #7A23A8

analogous

#94A823 #51A823 #23A838

triadic

#51A823 #2351A8 #A82351

tetradic

#51A823 #2394A8 #7A23A8 #A83823

square

#51A823 #2394A8 #7A23A8 #A83823

split-complementary

#51A823 #3823A8 #A82394

monochromatic

#20430E #397518 #51A823 #6BD534 #90DF66

Accessibility & contrast

On white

3.01

#51A823 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.98

#51A823 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A823

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A823	#FFFFFF	#000000	##000000
##51A823	1.00	3.01	6.98	6.98
#FFFFFF	3.01	1.00	21.00	21.00
#000000	6.98	21.00	1.00	1.00
##000000	6.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AE9900

Deuteranopia (green-blind)

#A29232

Tritanopia (blue-blind)

#4BA28F

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #51a823;
/* rgb */ color: rgb(81, 168, 35);
/* oklch */ color: oklch(65.2% 0.183 137.4);

Tailwind

colors: {
  custom: {
    50: '#8bc269',
    500: '#51a823',
    950: '#000000',
  },
}

SCSS

$custom: #51a823;
$custom-light: #8bc269;
$custom-dark: #000000;

JSON

{
  "hex": "#51a823",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 35
  },
  "hsl": {
    "h": 99.248,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.65234,
    "c": 0.18346,
    "h": 137.4
  },
  "luminance": 0.29876
}

Semantic roles & 50–950 ramp

primary

#51A823

secondary

#A362C5

accent

#3FE8AE

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A823

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

Preview Lab → · Contrast checker → · Palette generator →