#66BDFA#66BDFA

#66BDFA is a light, vivid cyan. Relative luminance 0.461; OKLCH L 76.8% C 0.122 H 241.3°. Best body text is #000000 at 10.22:1 contrast (WCAG AA passes).

Color values

HEX#66BDFA
RGBrgb(102, 189, 250)
HSLhsl(205, 94%, 69%)
HSVhsv(205, 59%, 98%)
CMYKcmyk(59.2%, 24.4%, 0%, 2%)
CIE-LABlab(73.62, -8.74, -38.03)
CIE-LCHlch(73.62, 39.02, 257.06°)
OKLaboklab(76.85% -0.0584 -0.1067)
OKLCHoklch(76.85% 0.122 241.3)
XYZxyz(40.9260, 46.1182, 97.1689)
Luminance0.4612 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66BDFA #FAA366
analogous
#66FAED #66BDFA #6673FA
triadic
#66BDFA #FA66BD #BDFA66
tetradic
#66BDFA #ED66FA #FAA366 #73FA66
square
#66BDFA #ED66FA #FAA366 #73FA66
split-complementary
#66BDFA #FA6673 #FAED66
monochromatic
#0786DE #2BA3F8 #66BDFA #A1D7FC #DDF0FE

Accessibility & contrast

On white

2.05
#66BDFA on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.22
#66BDFA on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDFA
10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66BDFA#FFFFFF#000000##000000
##66BDFA1.002.0510.2210.22
#FFFFFF2.051.0021.0021.00
#00000010.2221.001.001.00
##00000010.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#A2BDFD
Deuteranopia (green-blind)
#8EAEF9
Tritanopia (blue-blind)
#00CCD2
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #66bdfa;
/* rgb */ color: rgb(102, 189, 250);
/* oklch */ color: oklch(76.8% 0.122 241.3);
Tailwind
colors: {
  custom: {
    50: '#9dd0fc',
    500: '#66bdfa',
    950: '#000000',
  },
}
SCSS
$custom: #66bdfa;
$custom-light: #9dd0fc;
$custom-dark: #000000;
JSON
{
  "hex": "#66bdfa",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 250
  },
  "hsl": {
    "h": 204.73,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.76848,
    "c": 0.12162,
    "h": 241.3
  },
  "luminance": 0.46122
}

Semantic roles & 50–950 ramp

primary
#66BDFA
secondary
#F4DAC8
accent
#5F00E6
background
#FAFCFF
surface
#F4F9FF
border
#CED2D7
text
#0F1417
muted
#7F8285

Preview Lab

Preview with #66BDFA

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

Preview Lab → · Contrast checker → · Palette generator →

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