#51E166#51E166

#51E166 is a light, highly saturated green. Relative luminance 0.566; OKLCH L 80.6% C 0.206 H 145.8°. Best body text is #000000 at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#51E166
RGB	rgb(81, 225, 102)
HSL	hsl(129, 71%, 60%)
HSV	hsv(129, 64%, 88%)
CMYK	cmyk(64%, 0%, 54.7%, 11.8%)
CIE-LAB	lab(79.93, -63.08, 48.46)
CIE-LCH	lch(79.93, 79.55, 142.47°)
OKLab	oklab(80.58% -0.1705 0.1157)
OKLCH	oklch(80.58% 0.206 145.8)
XYZ	xyz(32.7147, 56.5557, 21.7601)
Luminance	0.5656 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E166 #E151CC

analogous

#84E151 #51E166 #51E1AE

triadic

#51E166 #6651E1 #E16651

tetradic

#51E166 #5184E1 #E151CC #E1AE51

square

#51E166 #5184E1 #E151CC #E1AE51

split-complementary

#51E166 #AE51E1 #E15184

monochromatic

#1B9D2E #24D13D #51E166 #85EA94 #B9F3C2

Accessibility & contrast

On white

1.71

#51E166 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.31

#51E166 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E166

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E166	#FFFFFF	#000000	##000000
##51E166	1.00	1.71	12.31	12.31
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.31	21.00	1.00	1.00
##000000	12.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4CE5A

Deuteranopia (green-blind)

#D3C16F

Tritanopia (blue-blind)

#29DCC5

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #51e166;
/* rgb */ color: rgb(81, 225, 102);
/* oklch */ color: oklch(80.6% 0.206 145.8);

Tailwind

colors: {
  custom: {
    50: '#91eb95',
    500: '#51e166',
    950: '#000000',
  },
}

SCSS

$custom: #51e166;
$custom-light: #91eb95;
$custom-dark: #000000;

JSON

{
  "hex": "#51e166",
  "rgb": {
    "r": 81,
    "g": 225,
    "b": 102
  },
  "hsl": {
    "h": 128.75,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.80584,
    "c": 0.20602,
    "h": 145.8
  },
  "luminance": 0.56559
}

Semantic roles & 50–950 ramp

primary

#51E166

secondary

#A03691

accent

#3AD3ED

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E160D

muted

#7F857F

Preview Lab

Preview with #51E166

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

Preview Lab → · Contrast checker → · Palette generator →