#66EC9F#66EC9F

#66EC9F is a very light, vivid green. Relative luminance 0.653; OKLCH L 84.9% C 0.161 H 155.4°. Best body text is #000000 at 14.06:1 contrast (WCAG AA passes).

Color values

HEX	#66EC9F
RGB	rgb(102, 236, 159)
HSL	hsl(146, 78%, 66%)
HSV	hsv(146, 57%, 93%)
CMYK	cmyk(56.8%, 0%, 32.6%, 7.5%)
CIE-LAB	lab(84.65, -53.80, 26.56)
CIE-LCH	lch(84.65, 60.00, 153.72°)
OKLab	oklab(84.9% -0.1463 0.067)
OKLCH	oklch(84.9% 0.161 155.4)
XYZ	xyz(41.7295, 65.3150, 43.2021)
Luminance	0.6532 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC9F #EC66B3

analogous

#70EC66 #66EC9F #66ECE2

triadic

#66EC9F #9F66EC #EC9F66

tetradic

#66EC9F #6670EC #EC66B3 #ECE266

square

#66EC9F #6670EC #EC66B3 #ECE266

split-complementary

#66EC9F #E266EC #EC6670

monochromatic

#18C05F #30E57D #66EC9F #9CF3C1 #D3FAE3

Accessibility & contrast

On white

1.49

#66EC9F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.06

#66EC9F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC9F

14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC9F	#FFFFFF	#000000	##000000
##66EC9F	1.00	1.49	14.06	14.06
#FFFFFF	1.49	1.00	21.00	21.00
#000000	14.06	21.00	1.00	1.00
##000000	14.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EBDB9A

Deuteranopia (green-blind)

#D9CEA4

Tritanopia (blue-blind)

#39EAD8

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66ec9f;
/* rgb */ color: rgb(102, 236, 159);
/* oklch */ color: oklch(84.9% 0.161 155.4);

Tailwind

colors: {
  custom: {
    50: '#9cf3bb',
    500: '#66ec9f',
    950: '#000000',
  },
}

SCSS

$custom: #66ec9f;
$custom-light: #9cf3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec9f",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 159
  },
  "hsl": {
    "h": 145.522,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.84897,
    "c": 0.16095,
    "h": 155.4
  },
  "luminance": 0.65319
}

Semantic roles & 50–950 ramp

primary

#66EC9F

secondary

#BE3885

accent

#0B82DA

background

#FCFFFD

surface

#F6FEF8

border

#D0D6D1

text

#0F1712

muted

#808582

Preview Lab

Preview with #66EC9F

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

Preview Lab → · Contrast checker → · Palette generator →