#51BB55#51BB55

#51BB55 is a light, vivid green. Relative luminance 0.379; OKLCH L 70.7% C 0.172 H 144.1°. Best body text is #000000 at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#51BB55
RGB	rgb(81, 187, 85)
HSL	hsl(122, 44%, 53%)
HSV	hsv(122, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 54.5%, 26.7%)
CIE-LAB	lab(67.98, -51.30, 42.16)
CIE-LCH	lch(67.98, 66.40, 140.59°)
OKLab	oklab(70.67% -0.1393 0.1007)
OKLCH	oklch(70.67% 0.172 144.1)
XYZ	xyz(22.8021, 37.9439, 14.7149)
Luminance	0.3795 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB55 #BB51B7

analogous

#82BB51 #51BB55 #51BB8A

triadic

#51BB55 #5551BB #BB5551

tetradic

#51BB55 #5182BB #BB51B7 #BB8A51

square

#51BB55 #5182BB #BB51B7 #BB8A51

split-complementary

#51BB55 #8A51BB #BB5182

monochromatic

#29692B #3A953E #51BB55 #7DCC80 #A9DDAB

Accessibility & contrast

On white

2.44

#51BB55 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.59

#51BB55 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB55

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB55	#FFFFFF	#000000	##000000
##51BB55	1.00	2.44	8.59	8.59
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.59	21.00	1.00	1.00
##000000	8.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEAB4C

Deuteranopia (green-blind)

#B1A25D

Tritanopia (blue-blind)

#3EB6A4

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #51bb55;
/* rgb */ color: rgb(81, 187, 85);
/* oklch */ color: oklch(70.7% 0.172 144.1);

Tailwind

colors: {
  custom: {
    50: '#8bd087',
    500: '#51bb55',
    950: '#000000',
  },
}

SCSS

$custom: #51bb55;
$custom-light: #8bd087;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb55",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 85
  },
  "hsl": {
    "h": 122.264,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70668,
    "c": 0.17182,
    "h": 144.1
  },
  "luminance": 0.37946
}

Semantic roles & 50–950 ramp

primary

#51BB55

secondary

#CB9DC9

accent

#54CFD4

background

#F9FCF8

surface

#F1F9F0

border

#CBD2CB

text

#0D140B

muted

#7E827C

Preview Lab

Preview with #51BB55

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

Preview Lab → · Contrast checker → · Palette generator →