#66CAFB#66CAFB

#66CAFB is a light, moderate cyan. Relative luminance 0.520; OKLCH L 79.8% C 0.116 H 232.1°. Best body text is #000000 at 11.41:1 contrast (WCAG AA passes).

Color values

HEX#66CAFB
RGBrgb(102, 202, 251)
HSLhsl(200, 95%, 69%)
HSVhsv(200, 59%, 98%)
CMYKcmyk(59.4%, 19.5%, 0%, 1.6%)
CIE-LABlab(77.30, -15.33, -32.88)
CIE-LCHlch(77.30, 36.28, 245.00°)
OKLaboklab(79.78% -0.0716 -0.0919)
OKLCHoklch(79.78% 0.116 232.1)
XYZxyz(44.0059, 52.0266, 98.9711)
Luminance0.5203 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CAFB #FB9766
analogous
#66FBE2 #66CAFB #6680FB
triadic
#66CAFB #FB66CA #CAFB66
tetradic
#66CAFB #E266FB #FB9766 #80FB66
square
#66CAFB #E266FB #FB9766 #80FB66
split-complementary
#66CAFB #FB6680 #FBE266
monochromatic
#0699E1 #2AB5F9 #66CAFB #A2DFFD #DDF3FE

Accessibility & contrast

On white

1.84
#66CAFB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.41
#66CAFB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CAFB
11.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CAFB#FFFFFF#000000##000000
##66CAFB1.001.8411.4111.41
#FFFFFF1.841.0021.0021.00
#00000011.4121.001.001.00
##00000011.4121.001.001.00

Color blindness preview

Protanopia (red-blind)
#B2C8FD
Deuteranopia (green-blind)
#9DB8FA
Tritanopia (blue-blind)
#00D7DA
Achromatopsia (no color)
#BFBFBF

Design tokens & code

CSS
--color: #66cafb;
/* rgb */ color: rgb(102, 202, 251);
/* oklch */ color: oklch(79.8% 0.116 232.1);
Tailwind
colors: {
  custom: {
    50: '#9edafc',
    500: '#66cafb',
    950: '#000000',
  },
}
SCSS
$custom: #66cafb;
$custom-light: #9edafc;
$custom-dark: #000000;
JSON
{
  "hex": "#66cafb",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 251
  },
  "hsl": {
    "h": 199.732,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.79777,
    "c": 0.11645,
    "h": 232.1
  },
  "luminance": 0.52031
}

Semantic roles & 50–950 ramp

primary
#66CAFB
secondary
#D56630
accent
#4B00E6
background
#FCFEFF
surface
#F6FBFF
border
#D0D4D7
text
#0F1417
muted
#808385

Preview Lab

Preview with #66CAFB

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

Preview Lab → · Contrast checker → · Palette generator →

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