#66EC9B#66EC9B

#66EC9B is a very light, vivid green. Relative luminance 0.652; OKLCH L 84.8% C 0.165 H 154.2°. Best body text is #000000 at 14.04:1 contrast (WCAG AA passes).

Color values

HEX#66EC9B
RGBrgb(102, 236, 155)
HSLhsl(144, 78%, 66%)
HSVhsv(144, 57%, 93%)
CMYKcmyk(56.8%, 0%, 34.3%, 7.5%)
CIE-LABlab(84.58, -54.54, 28.51)
CIE-LCHlch(84.58, 61.54, 152.40°)
OKLaboklab(84.82% -0.1481 0.0717)
OKLCHoklch(84.82% 0.165 154.2)
XYZxyz(41.3880, 65.1784, 41.4036)
Luminance0.6518 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66EC9B #EC66B7
analogous
#74EC66 #66EC9B #66ECDE
triadic
#66EC9B #9B66EC #EC9B66
tetradic
#66EC9B #6674EC #EC66B7 #ECDE66
square
#66EC9B #6674EC #EC66B7 #ECDE66
split-complementary
#66EC9B #DE66EC #EC6674
monochromatic
#18C05A #30E577 #66EC9B #9CF3BF #D3FAE2

Accessibility & contrast

On white

1.50
#66EC9B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

14.04
#66EC9B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC9B
14.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66EC9B#FFFFFF#000000##000000
##66EC9B1.001.5014.0414.04
#FFFFFF1.501.0021.0021.00
#00000014.0421.001.001.00
##00000014.0421.001.001.00

Color blindness preview

Protanopia (red-blind)
#ECDB96
Deuteranopia (green-blind)
#D9CEA0
Tritanopia (blue-blind)
#3BE9D7
Achromatopsia (no color)
#D3D3D3

Design tokens & code

CSS
--color: #66ec9b;
/* rgb */ color: rgb(102, 236, 155);
/* oklch */ color: oklch(84.8% 0.165 154.2);
Tailwind
colors: {
  custom: {
    50: '#9cf3b9',
    500: '#66ec9b',
    950: '#000000',
  },
}
SCSS
$custom: #66ec9b;
$custom-light: #9cf3b9;
$custom-dark: #000000;
JSON
{
  "hex": "#66ec9b",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 155
  },
  "hsl": {
    "h": 143.731,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.84816,
    "c": 0.16453,
    "h": 154.2
  },
  "luminance": 0.65182
}

Semantic roles & 50–950 ramp

primary
#66EC9B
secondary
#BE3889
accent
#0B88DA
background
#FCFFFD
surface
#F6FEF8
border
#D0D6D1
text
#0F1711
muted
#808581

Preview Lab

Preview with #66EC9B

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

Preview Lab → · Contrast checker → · Palette generator →

#66EC9B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva