#66EC59#66EC59

#66EC59 is a very light, highly saturated green. Relative luminance 0.635; OKLCH L 83.8% C 0.221 H 141.9°. Best body text is #000000 at 13.71:1 contrast (WCAG AA passes).

Color values

HEX	#66EC59
RGB	rgb(102, 236, 89)
HSL	hsl(115, 79%, 64%)
HSV	hsv(115, 62%, 93%)
CMYK	cmyk(56.8%, 0%, 62.3%, 7.5%)
CIE-LAB	lab(83.72, -63.85, 58.73)
CIE-LCH	lch(83.72, 86.75, 137.39°)
OKLab	oklab(83.84% -0.1741 0.1366)
OKLCH	oklch(83.84% 0.221 141.9)
XYZ	xyz(37.2762, 63.5337, 19.7481)
Luminance	0.6354 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC59 #DF59EC

analogous

#AFEC59 #66EC59 #59EC95

triadic

#66EC59 #5966EC #EC5966

tetradic

#66EC59 #59AFEC #DF59EC #EC9559

square

#66EC59 #59AFEC #DF59EC #EC9559

split-complementary

#66EC59 #9559EC #EC59AF

monochromatic

#23B615 #33E622 #66EC59 #99F290 #CBF9C7

Accessibility & contrast

On white

1.53

#66EC59 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.71

#66EC59 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC59

13.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC59	#FFFFFF	#000000	##000000
##66EC59	1.00	1.53	13.71	13.71
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.71	21.00	1.00	1.00
##000000	13.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1D848

Deuteranopia (green-blind)

#E0CC65

Tritanopia (blue-blind)

#52E5CD

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66ec59;
/* rgb */ color: rgb(102, 236, 89);
/* oklch */ color: oklch(83.8% 0.221 141.9);

Tailwind

colors: {
  custom: {
    50: '#9ef38d',
    500: '#66ec59',
    950: '#000000',
  },
}

SCSS

$custom: #66ec59;
$custom-light: #9ef38d;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec59",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 89
  },
  "hsl": {
    "h": 114.694,
    "s": 79.459,
    "l": 63.725
  },
  "oklch": {
    "l": 0.83837,
    "c": 0.22133,
    "h": 141.9
  },
  "luminance": 0.63537
}

Semantic roles & 50–950 ramp

primary

#66EC59

secondary

#AA34B5

accent

#0ADCC9

background

#FCFFFC

surface

#F6FEF4

border

#D0D6CE

text

#10170D

muted

#80857F

Preview Lab

Preview with #66EC59

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

Preview Lab → · Contrast checker → · Palette generator →