#66E3FE#66E3FE

#66E3FE is a very light, moderate cyan. Relative luminance 0.649; OKLCH L 85.5% C 0.116 H 214.2°. Best body text is #000000 at 13.98:1 contrast (WCAG AA passes).

Color values

HEX#66E3FE
RGBrgb(102, 227, 254)
HSLhsl(191, 99%, 70%)
HSVhsv(191, 60%, 100%)
CMYKcmyk(59.8%, 10.6%, 0%, 0.4%)
CIE-LABlab(84.44, -27.08, -23.54)
CIE-LCHlch(84.44, 35.88, 221.00°)
OKLaboklab(85.52% -0.0962 -0.0653)
OKLCHoklch(85.52% 0.116 214.2)
XYZxyz(50.8307, 64.9135, 103.5975)
Luminance0.6492 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E3FE #FE8166
analogous
#66FECD #66E3FE #6697FE
triadic
#66E3FE #FE66E3 #E3FE66
tetradic
#66E3FE #CD66FE #FE8166 #97FE66
square
#66E3FE #CD66FE #FE8166 #97FE66
split-complementary
#66E3FE #FE6697 #FECD66
monochromatic
#02BFE8 #29D8FE #66E3FE #A3EEFE #E0F9FF

Accessibility & contrast

On white

1.50
#66E3FE on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

13.98
#66E3FE on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E3FE
13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E3FE#FFFFFF#000000##000000
##66E3FE1.001.5013.9813.98
#FFFFFF1.501.0021.0021.00
#00000013.9821.001.001.00
##00000013.9821.001.001.00

Color blindness preview

Protanopia (red-blind)
#CFDCFF
Deuteranopia (green-blind)
#B9CCFE
Tritanopia (blue-blind)
#00EDEB
Achromatopsia (no color)
#D3D3D3

Design tokens & code

CSS
--color: #66e3fe;
/* rgb */ color: rgb(102, 227, 254);
/* oklch */ color: oklch(85.5% 0.116 214.2);
Tailwind
colors: {
  custom: {
    50: '#9fecfe',
    500: '#66e3fe',
    950: '#000000',
  },
}
SCSS
$custom: #66e3fe;
$custom-light: #9fecfe;
$custom-dark: #000000;
JSON
{
  "hex": "#66e3fe",
  "rgb": {
    "r": 102,
    "g": 227,
    "b": 254
  },
  "hsl": {
    "h": 190.658,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.85522,
    "c": 0.11631,
    "h": 214.2
  },
  "luminance": 0.64919
}

Semantic roles & 50–950 ramp

primary
#66E3FE
secondary
#D94D2F
accent
#2900E6
background
#FDFEFF
surface
#F7FDFF
border
#D0D5D7
text
#101617
muted
#818485

Preview Lab

Preview with #66E3FE

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

Preview Lab → · Contrast checker → · Palette generator →

#66E3FE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva