#66C6FE#66C6FE

#66C6FE is a light, vivid cyan. Relative luminance 0.504; OKLCH L 79.0% C 0.121 H 236.6°. Best body text is #000000 at 11.07:1 contrast (WCAG AA passes).

Color values

HEX#66C6FE
RGBrgb(102, 198, 254)
HSLhsl(202, 99%, 70%)
HSVhsv(202, 60%, 100%)
CMYKcmyk(59.8%, 22%, 0%, 0.4%)
CIE-LABlab(76.29, -12.33, -36.04)
CIE-LCHlch(76.29, 38.09, 251.12°)
OKLaboklab(79.02% -0.0664 -0.1009)
OKLCHoklch(79.02% 0.121 236.6)
XYZxyz(43.5562, 50.3645, 101.1726)
Luminance0.5037 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C6FE #FE9E66
analogous
#66FEEA #66C6FE #667AFE
triadic
#66C6FE #FE66C6 #C6FE66
tetradic
#66C6FE #EA66FE #FE9E66 #7AFE66
square
#66C6FE #EA66FE #FE9E66 #7AFE66
split-complementary
#66C6FE #FE667A #FEEA66
monochromatic
#0293E8 #29AFFE #66C6FE #A3DDFE #E0F3FF

Accessibility & contrast

On white

1.90
#66C6FE on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.07
#66C6FE on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C6FE
11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C6FE#FFFFFF#000000##000000
##66C6FE1.001.9011.0711.07
#FFFFFF1.901.0021.0021.00
#00000011.0721.001.001.00
##00000011.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#ACC5FF
Deuteranopia (green-blind)
#97B5FD
Tritanopia (blue-blind)
#00D4D9
Achromatopsia (no color)
#BCBCBC

Design tokens & code

CSS
--color: #66c6fe;
/* rgb */ color: rgb(102, 198, 254);
/* oklch */ color: oklch(79.0% 0.121 236.6);
Tailwind
colors: {
  custom: {
    50: '#9ed7ff',
    500: '#66c6fe',
    950: '#000000',
  },
}
SCSS
$custom: #66c6fe;
$custom-light: #9ed7ff;
$custom-dark: #000000;
JSON
{
  "hex": "#66c6fe",
  "rgb": {
    "r": 102,
    "g": 198,
    "b": 254
  },
  "hsl": {
    "h": 202.105,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.79017,
    "c": 0.12082,
    "h": 236.6
  },
  "luminance": 0.50369
}

Semantic roles & 50–950 ramp

primary
#66C6FE
secondary
#D96E2F
accent
#5500E6
background
#FCFEFF
surface
#F6FBFF
border
#D0D4D7
text
#0F1418
muted
#808386

Preview Lab

Preview with #66C6FE

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

Preview Lab → · Contrast checker → · Palette generator →

#66C6FE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva