#51A121#51A121

#51A121 is a light, vivid yellow-green. Relative luminance 0.273; OKLCH L 63.4% C 0.176 H 136.8°. Best body text is #000000 at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#51A121
RGB	rgb(81, 161, 33)
HSL	hsl(98, 66%, 38%)
HSV	hsv(98, 80%, 63%)
CMYK	cmyk(49.7%, 0%, 79.5%, 36.9%)
CIE-LAB	lab(59.29, -46.12, 54.34)
CIE-LCH	lch(59.29, 71.27, 130.32°)
OKLab	oklab(63.38% -0.1282 0.1206)
OKLCH	oklch(63.38% 0.176 136.8)
XYZ	xyz(16.4122, 27.3477, 5.8524)
Luminance	0.2735 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A121 #7121A1

analogous

#91A121 #51A121 #21A131

triadic

#51A121 #2151A1 #A12151

tetradic

#51A121 #2191A1 #7121A1 #A13121

square

#51A121 #2191A1 #7121A1 #A13121

split-complementary

#51A121 #3121A1 #A12191

monochromatic

#1E3B0C #376E17 #51A121 #6BD42C #8EDE5E

Accessibility & contrast

On white

3.25

#51A121 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.47

#51A121 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A121

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A121	#FFFFFF	#000000	##000000
##51A121	1.00	3.25	6.47	6.47
#FFFFFF	3.25	1.00	21.00	21.00
#000000	6.47	21.00	1.00	1.00
##000000	6.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A79300

Deuteranopia (green-blind)

#9C8C30

Tritanopia (blue-blind)

#4C9B89

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #51a121;
/* rgb */ color: rgb(81, 161, 33);
/* oklch */ color: oklch(63.4% 0.176 136.8);

Tailwind

colors: {
  custom: {
    50: '#8abd67',
    500: '#51a121',
    950: '#000000',
  },
}

SCSS

$custom: #51a121;
$custom-light: #8abd67;
$custom-dark: #000000;

JSON

{
  "hex": "#51a121",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 33
  },
  "hsl": {
    "h": 97.5,
    "s": 65.979,
    "l": 38.039
  },
  "oklch": {
    "l": 0.63378,
    "c": 0.17607,
    "h": 136.8
  },
  "luminance": 0.27349
}

Semantic roles & 50–950 ramp

primary

#51A121

secondary

#9C5BC3

accent

#3FE9A9

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0D1207

muted

#7D817A

Preview Lab

Preview with #51A121

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

Preview Lab → · Contrast checker → · Palette generator →