#66CEFD#66CEFD

#66CEFD is a light, moderate cyan. Relative luminance 0.541; OKLCH L 80.8% C 0.117 H 230.1°. Best body text is #000000 at 11.81:1 contrast (WCAG AA passes).

Color values

HEX#66CEFD
RGBrgb(102, 206, 253)
HSLhsl(199, 97%, 70%)
HSVhsv(199, 60%, 99%)
CMYKcmyk(59.7%, 18.6%, 0%, 0.8%)
CIE-LABlab(78.49, -16.81, -32.10)
CIE-LCHlch(78.49, 36.24, 242.36°)
OKLaboklab(80.76% -0.075 -0.0896)
OKLCHoklch(80.76% 0.117 230.1)
XYZxyz(45.2736, 54.0548, 100.9572)
Luminance0.5406 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CEFD #FD9566
analogous
#66FDE0 #66CEFD #6683FD
triadic
#66CEFD #FD66CE #CEFD66
tetradic
#66CEFD #E066FD #FD9566 #83FD66
square
#66CEFD #E066FD #FD9566 #83FD66
split-complementary
#66CEFD #FD6683 #FDE066
monochromatic
#039FE6 #2ABBFC #66CEFD #A2E1FE #DFF5FF

Accessibility & contrast

On white

1.78
#66CEFD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.81
#66CEFD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEFD
11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CEFD#FFFFFF#000000##000000
##66CEFD1.001.7811.8111.81
#FFFFFF1.781.0021.0021.00
#00000011.8121.001.001.00
##00000011.8121.001.001.00

Color blindness preview

Protanopia (red-blind)
#B6CBFF
Deuteranopia (green-blind)
#A1BBFC
Tritanopia (blue-blind)
#00DBDD
Achromatopsia (no color)
#C2C2C2

Design tokens & code

CSS
--color: #66cefd;
/* rgb */ color: rgb(102, 206, 253);
/* oklch */ color: oklch(80.8% 0.117 230.1);
Tailwind
colors: {
  custom: {
    50: '#9eddfe',
    500: '#66cefd',
    950: '#000000',
  },
}
SCSS
$custom: #66cefd;
$custom-light: #9eddfe;
$custom-dark: #000000;
JSON
{
  "hex": "#66cefd",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 253
  },
  "hsl": {
    "h": 198.675,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.80755,
    "c": 0.11689,
    "h": 230.1
  },
  "luminance": 0.54059
}

Semantic roles & 50–950 ramp

primary
#66CEFD
secondary
#D8642F
accent
#4700E6
background
#FCFEFF
surface
#F6FCFF
border
#D0D5D7
text
#101517
muted
#808485

Preview Lab

Preview with #66CEFD

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

Preview Lab → · Contrast checker → · Palette generator →

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