#51A225#51A225

#51A225 is a light, vivid yellow-green. Relative luminance 0.277; OKLCH L 63.7% C 0.175 H 137.1°. Best body text is #000000 at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#51A225
RGB	rgb(81, 162, 37)
HSL	hsl(99, 63%, 39%)
HSV	hsv(99, 77%, 64%)
CMYK	cmyk(50%, 0%, 77.2%, 36.5%)
CIE-LAB	lab(59.64, -46.27, 53.37)
CIE-LCH	lch(59.64, 70.63, 130.93°)
OKLab	oklab(63.67% -0.1284 0.1192)
OKLCH	oklch(63.67% 0.175 137.1)
XYZ	xyz(16.6471, 27.7224, 6.2237)
Luminance	0.2772 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A225 #7625A2

analogous

#90A225 #51A225 #25A238

triadic

#51A225 #2551A2 #A22551

tetradic

#51A225 #2590A2 #7625A2 #A23825

square

#51A225 #2590A2 #7625A2 #A23825

split-complementary

#51A225 #3825A2 #A22590

monochromatic

#1F3E0E #38701A #51A225 #6BD134 #8FDC65

Accessibility & contrast

On white

3.21

#51A225 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.54

#51A225 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A225

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A225	#FFFFFF	#000000	##000000
##51A225	1.00	3.21	6.54	6.54
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.54	21.00	1.00	1.00
##000000	6.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A89406

Deuteranopia (green-blind)

#9D8D32

Tritanopia (blue-blind)

#4C9C8A

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #51a225;
/* rgb */ color: rgb(81, 162, 37);
/* oklch */ color: oklch(63.7% 0.175 137.1);

Tailwind

colors: {
  custom: {
    50: '#8abe69',
    500: '#51a225',
    950: '#000000',
  },
}

SCSS

$custom: #51a225;
$custom-light: #8abe69;
$custom-dark: #000000;

JSON

{
  "hex": "#51a225",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 37
  },
  "hsl": {
    "h": 98.88,
    "s": 62.814,
    "l": 39.02
  },
  "oklch": {
    "l": 0.63667,
    "c": 0.17522,
    "h": 137.1
  },
  "luminance": 0.27724
}

Semantic roles & 50–950 ramp

primary

#51A225

secondary

#A061C2

accent

#42E6AC

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0C1207

muted

#7D817A

Preview Lab

Preview with #51A225

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

Preview Lab → · Contrast checker → · Palette generator →