#51BB4E#51BB4E

#51BB4E is a light, vivid green. Relative luminance 0.378; OKLCH L 70.6% C 0.178 H 143.0°. Best body text is #000000 at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#51BB4E
RGB	rgb(81, 187, 78)
HSL	hsl(118, 44%, 52%)
HSV	hsv(118, 58%, 73%)
CMYK	cmyk(56.7%, 0%, 58.3%, 26.7%)
CIE-LAB	lab(67.90, -52.17, 45.37)
CIE-LCH	lch(67.90, 69.14, 138.99°)
OKLab	oklab(70.58% -0.1419 0.1071)
OKLCH	oklch(70.58% 0.178 143)
XYZ	xyz(22.5376, 37.8381, 13.3221)
Luminance	0.3784 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB4E #B84EBB

analogous

#87BB4E #51BB4E #4EBB82

triadic

#51BB4E #4E51BB #BB4E51

tetradic

#51BB4E #4E87BB #B84EBB #BB824E

square

#51BB4E #4E87BB #B84EBB #BB824E

split-complementary

#51BB4E #824EBB #BB4E87

monochromatic

#296728 #3B9339 #51BB4E #7CCC7A #A8DDA6

Accessibility & contrast

On white

2.45

#51BB4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.57

#51BB4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB4E

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB4E	#FFFFFF	#000000	##000000
##51BB4E	1.00	2.45	8.57	8.57
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.57	21.00	1.00	1.00
##000000	8.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFAB43

Deuteranopia (green-blind)

#B1A257

Tritanopia (blue-blind)

#40B6A3

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #51bb4e;
/* rgb */ color: rgb(81, 187, 78);
/* oklch */ color: oklch(70.6% 0.178 143.0);

Tailwind

colors: {
  custom: {
    50: '#8cd083',
    500: '#51bb4e',
    950: '#000000',
  },
}

SCSS

$custom: #51bb4e;
$custom-light: #8cd083;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb4e",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 78
  },
  "hsl": {
    "h": 118.349,
    "s": 44.49,
    "l": 51.961
  },
  "oklch": {
    "l": 0.70579,
    "c": 0.17779,
    "h": 143
  },
  "luminance": 0.3784
}

Semantic roles & 50–950 ramp

primary

#51BB4E

secondary

#C99BCA

accent

#54D4D1

background

#F9FCF8

surface

#F1F9EF

border

#CBD2CA

text

#0D140B

muted

#7E827C

Preview Lab

Preview with #51BB4E

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

Preview Lab → · Contrast checker → · Palette generator →