#51D666#51D666

#51D666 is a light, vivid green. Relative luminance 0.508; OKLCH L 77.8% C 0.192 H 146.3°. Best body text is #000000 at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#51D666
RGB	rgb(81, 214, 102)
HSL	hsl(129, 62%, 58%)
HSV	hsv(129, 62%, 84%)
CMYK	cmyk(62.1%, 0%, 52.3%, 16.1%)
CIE-LAB	lab(76.56, -59.14, 44.39)
CIE-LCH	lch(76.56, 73.95, 143.11°)
OKLab	oklab(77.8% -0.1599 0.1067)
OKLCH	oklch(77.8% 0.192 146.3)
XYZ	xyz(29.8362, 50.7988, 20.8006)
Luminance	0.5080 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D666 #D651C1

analogous

#7ED651 #51D666 #51D6A9

triadic

#51D666 #6651D6 #D66651

tetradic

#51D666 #517ED6 #D651C1 #D6A951

square

#51D666 #517ED6 #D651C1 #D6A951

split-complementary

#51D666 #A951D6 #D6517E

monochromatic

#218C32 #2DBD43 #51D666 #83E292 #B4EDBD

Accessibility & contrast

On white

1.88

#51D666 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.16

#51D666 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D666

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D666	#FFFFFF	#000000	##000000
##51D666	1.00	1.88	11.16	11.16
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.16	21.00	1.00	1.00
##000000	11.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C45C

Deuteranopia (green-blind)

#C8B86E

Tritanopia (blue-blind)

#2FD1BC

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51d666;
/* rgb */ color: rgb(81, 214, 102);
/* oklch */ color: oklch(77.8% 0.192 146.3);

Tailwind

colors: {
  custom: {
    50: '#8fe494',
    500: '#51d666',
    950: '#000000',
  },
}

SCSS

$custom: #51d666;
$custom-light: #8fe494;
$custom-dark: #000000;

JSON

{
  "hex": "#51d666",
  "rgb": {
    "r": 81,
    "g": 214,
    "b": 102
  },
  "hsl": {
    "h": 129.474,
    "s": 61.86,
    "l": 57.843
  },
  "oklch": {
    "l": 0.77801,
    "c": 0.1922,
    "h": 146.3
  },
  "luminance": 0.50802
}

Semantic roles & 50–950 ramp

primary

#51D666

secondary

#923A84

accent

#43CBE5

background

#FCFEFC

surface

#F5FCF4

border

#CFD5CE

text

#0E160D

muted

#7F847F

Preview Lab

Preview with #51D666

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

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