#66C8FB#66C8FB

#66C8FB is a light, moderate cyan. Relative luminance 0.511; OKLCH L 79.3% C 0.117 H 233.6°. Best body text is #000000 at 11.22:1 contrast (WCAG AA passes).

Color values

HEX#66C8FB
RGBrgb(102, 200, 251)
HSLhsl(201, 95%, 69%)
HSVhsv(201, 59%, 98%)
CMYKcmyk(59.4%, 20.3%, 0%, 1.6%)
CIE-LABlab(76.74, -14.29, -33.75)
CIE-LCHlch(76.74, 36.65, 247.05°)
OKLaboklab(79.33% -0.0695 -0.0943)
OKLCHoklch(79.33% 0.117 233.6)
XYZxyz(43.5397, 51.0942, 98.8157)
Luminance0.5110 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C8FB #FB9966
analogous
#66FBE4 #66C8FB #667EFB
triadic
#66C8FB #FB66C8 #C8FB66
tetradic
#66C8FB #E466FB #FB9966 #7EFB66
square
#66C8FB #E466FB #FB9966 #7EFB66
split-complementary
#66C8FB #FB667E #FBE466
monochromatic
#0696E1 #2AB3F9 #66C8FB #A2DDFD #DDF3FE

Accessibility & contrast

On white

1.87
#66C8FB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.22
#66C8FB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8FB
11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C8FB#FFFFFF#000000##000000
##66C8FB1.001.8711.2211.22
#FFFFFF1.871.0021.0021.00
#00000011.2221.001.001.00
##00000011.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#AFC6FD
Deuteranopia (green-blind)
#9BB7FA
Tritanopia (blue-blind)
#00D6D9
Achromatopsia (no color)
#BDBDBD

Design tokens & code

CSS
--color: #66c8fb;
/* rgb */ color: rgb(102, 200, 251);
/* oklch */ color: oklch(79.3% 0.117 233.6);
Tailwind
colors: {
  custom: {
    50: '#9dd8fc',
    500: '#66c8fb',
    950: '#000000',
  },
}
SCSS
$custom: #66c8fb;
$custom-light: #9dd8fc;
$custom-dark: #000000;
JSON
{
  "hex": "#66c8fb",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 251
  },
  "hsl": {
    "h": 200.537,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.79331,
    "c": 0.11718,
    "h": 233.6
  },
  "luminance": 0.51098
}

Semantic roles & 50–950 ramp

primary
#66C8FB
secondary
#D56930
accent
#4F00E6
background
#FCFEFF
surface
#F6FBFF
border
#D0D4D7
text
#0F1417
muted
#808385

Preview Lab

Preview with #66C8FB

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

Preview Lab → · Contrast checker → · Palette generator →

#66C8FB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva