#51A825#51A825

#51A825 is a light, vivid yellow-green. Relative luminance 0.299; OKLCH L 65.2% C 0.182 H 137.6°. Best body text is #000000 at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#51A825
RGB	rgb(81, 168, 37)
HSL	hsl(100, 64%, 40%)
HSV	hsv(100, 78%, 66%)
CMYK	cmyk(51.8%, 0%, 78%, 34.1%)
CIE-LAB	lab(61.56, -48.61, 55.22)
CIE-LCH	lch(61.56, 73.56, 131.36°)
OKLab	oklab(65.25% -0.1347 0.1231)
OKLCH	oklch(65.25% 0.182 137.6)
XYZ	xyz(17.7293, 29.8868, 6.5844)
Luminance	0.2989 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A825 #7C25A8

analogous

#93A825 #51A825 #25A83A

triadic

#51A825 #2551A8 #A82551

tetradic

#51A825 #2593A8 #7C25A8 #A83A25

square

#51A825 #2593A8 #7C25A8 #A83A25

split-complementary

#51A825 #3A25A8 #A82593

monochromatic

#21440F #39761A #51A825 #6CD337 #91DE69

Accessibility & contrast

On white

3.01

#51A825 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.98

#51A825 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A825

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A825	#FFFFFF	#000000	##000000
##51A825	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)

#AE9901

Deuteranopia (green-blind)

#A29234

Tritanopia (blue-blind)

#4BA28F

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #51a825;
/* rgb */ color: rgb(81, 168, 37);
/* oklch */ color: oklch(65.2% 0.182 137.6);

Tailwind

colors: {
  custom: {
    50: '#8bc26a',
    500: '#51a825',
    950: '#000000',
  },
}

SCSS

$custom: #51a825;
$custom-light: #8bc26a;
$custom-dark: #000000;

JSON

{
  "hex": "#51a825",
  "rgb": {
    "r": 81,
    "g": 168,
    "b": 37
  },
  "hsl": {
    "h": 99.847,
    "s": 63.902,
    "l": 40.196
  },
  "oklch": {
    "l": 0.65247,
    "c": 0.18246,
    "h": 137.6
  },
  "luminance": 0.29888
}

Semantic roles & 50–950 ramp

primary

#51A825

secondary

#A465C4

accent

#41E7AF

background

#F9FCF6

surface

#F1F8EC

border

#CBD1C7

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A825

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

Preview Lab → · Contrast checker → · Palette generator →