#51AC1E#51AC1E

#51AC1E is a light, vivid yellow-green. Relative luminance 0.313; OKLCH L 66.3% C 0.190 H 137.4°. Best body text is #000000 at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#51AC1E
RGB	rgb(81, 172, 30)
HSL	hsl(98, 70%, 40%)
HSV	hsv(98, 83%, 67%)
CMYK	cmyk(52.9%, 0%, 82.6%, 32.5%)
CIE-LAB	lab(62.80, -50.52, 58.46)
CIE-LCH	lch(62.80, 77.27, 130.83°)
OKLab	oklab(66.26% -0.1402 0.1289)
OKLCH	oklch(66.26% 0.19 137.4)
XYZ	xyz(18.3796, 31.3467, 6.3100)
Luminance	0.3135 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AC1E #791EAC

analogous

#98AC1E #51AC1E #1EAC32

triadic

#51AC1E #1E51AC #AC1E51

tetradic

#51AC1E #1E98AC #791EAC #AC321E

square

#51AC1E #1E98AC #791EAC #AC321E

split-complementary

#51AC1E #321EAC #AC1E98

monochromatic

#20440C #387815 #51AC1E #6BDA2D #90E361

Accessibility & contrast

On white

2.89

#51AC1E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.27

#51AC1E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AC1E

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AC1E	#FFFFFF	#000000	##000000
##51AC1E	1.00	2.89	7.27	7.27
#FFFFFF	2.89	1.00	21.00	21.00
#000000	7.27	21.00	1.00	1.00
##000000	7.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B29D00

Deuteranopia (green-blind)

#A69530

Tritanopia (blue-blind)

#4AA692

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #51ac1e;
/* rgb */ color: rgb(81, 172, 30);
/* oklch */ color: oklch(66.3% 0.190 137.4);

Tailwind

colors: {
  custom: {
    50: '#8cc568',
    500: '#51ac1e',
    950: '#000000',
  },
}

SCSS

$custom: #51ac1e;
$custom-light: #8cc568;
$custom-dark: #000000;

JSON

{
  "hex": "#51ac1e",
  "rgb": {
    "r": 81,
    "g": 172,
    "b": 30
  },
  "hsl": {
    "h": 98.451,
    "s": 70.297,
    "l": 39.608
  },
  "oklch": {
    "l": 0.6626,
    "c": 0.19042,
    "h": 137.4
  },
  "luminance": 0.31348
}

Semantic roles & 50–950 ramp

primary

#51AC1E

secondary

#A25EC8

accent

#3BEDAD

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AC1E

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

Preview Lab → · Contrast checker → · Palette generator →