#66EC5C#66EC5C

#66EC5C is a very light, highly saturated green. Relative luminance 0.636; OKLCH L 83.9% C 0.219 H 142.2°. Best body text is #000000 at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#66EC5C
RGB	rgb(102, 236, 92)
HSL	hsl(116, 79%, 64%)
HSV	hsv(116, 61%, 93%)
CMYK	cmyk(56.8%, 0%, 61%, 7.5%)
CIE-LAB	lab(83.75, -63.54, 57.49)
CIE-LCH	lch(83.75, 85.69, 137.86°)
OKLab	oklab(83.87% -0.1731 0.1343)
OKLCH	oklch(83.87% 0.219 142.2)
XYZ	xyz(37.4048, 63.5851, 20.4251)
Luminance	0.6359 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC5C #E25CEC

analogous

#AEEC5C #66EC5C #5CEC9A

triadic

#66EC5C #5C66EC #EC5C66

tetradic

#66EC5C #5CAEEC #E25CEC #EC9A5C

square

#66EC5C #5CAEEC #E25CEC #EC9A5C

split-complementary

#66EC5C #9A5CEC #EC5CAE

monochromatic

#21B815 #33E625 #66EC5C #99F293 #CDF9CA

Accessibility & contrast

On white

1.53

#66EC5C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.72

#66EC5C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC5C

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC5C	#FFFFFF	#000000	##000000
##66EC5C	1.00	1.53	13.72	13.72
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.72	21.00	1.00	1.00
##000000	13.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1D84C

Deuteranopia (green-blind)

#E0CC68

Tritanopia (blue-blind)

#51E5CD

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66ec5c;
/* rgb */ color: rgb(102, 236, 92);
/* oklch */ color: oklch(83.9% 0.219 142.2);

Tailwind

colors: {
  custom: {
    50: '#9ef38f',
    500: '#66ec5c',
    950: '#000000',
  },
}

SCSS

$custom: #66ec5c;
$custom-light: #9ef38f;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec5c",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 92
  },
  "hsl": {
    "h": 115.833,
    "s": 79.121,
    "l": 64.314
  },
  "oklch": {
    "l": 0.83868,
    "c": 0.21911,
    "h": 142.2
  },
  "luminance": 0.63588
}

Semantic roles & 50–950 ramp

primary

#66EC5C

secondary

#AE35B8

accent

#0ADBCD

background

#FCFFFC

surface

#F6FEF4

border

#D0D6CE

text

#10170D

muted

#80857F

Preview Lab

Preview with #66EC5C

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

Preview Lab → · Contrast checker → · Palette generator →