#66BEF9#66BEF9

#66BEF9 is a light, vivid cyan. Relative luminance 0.465; OKLCH L 77.0% C 0.120 H 240.2°. Best body text is #000000 at 10.30:1 contrast (WCAG AA passes).

Color values

HEX#66BEF9
RGBrgb(102, 190, 249)
HSLhsl(204, 92%, 69%)
HSVhsv(204, 59%, 98%)
CMYKcmyk(59%, 23.7%, 0%, 2.4%)
CIE-LABlab(73.86, -9.58, -37.12)
CIE-LCHlch(73.86, 38.34, 255.52°)
OKLaboklab(77.02% -0.0597 -0.1041)
OKLCHoklch(77.02% 0.12 240.2)
XYZxyz(40.9854, 46.4874, 96.4172)
Luminance0.4649 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66BEF9 #F9A166
analogous
#66F9EB #66BEF9 #6675F9
triadic
#66BEF9 #F966BE #BEF966
tetradic
#66BEF9 #EB66F9 #F9A166 #75F966
square
#66BEF9 #EB66F9 #F9A166 #75F966
split-complementary
#66BEF9 #F96675 #F9EB66
monochromatic
#0987DC #2BA5F7 #66BEF9 #A1D7FB #DCF0FE

Accessibility & contrast

On white

2.04
#66BEF9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.30
#66BEF9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEF9
10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66BEF9#FFFFFF#000000##000000
##66BEF91.002.0410.3010.30
#FFFFFF2.041.0021.0021.00
#00000010.3021.001.001.00
##00000010.3021.001.001.00

Color blindness preview

Protanopia (red-blind)
#A3BEFC
Deuteranopia (green-blind)
#8FAFF8
Tritanopia (blue-blind)
#00CDD2
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #66bef9;
/* rgb */ color: rgb(102, 190, 249);
/* oklch */ color: oklch(77.0% 0.120 240.2);
Tailwind
colors: {
  custom: {
    50: '#9dd1fb',
    500: '#66bef9',
    950: '#000000',
  },
}
SCSS
$custom: #66bef9;
$custom-light: #9dd1fb;
$custom-dark: #000000;
JSON
{
  "hex": "#66bef9",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 249
  },
  "hsl": {
    "h": 204.082,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.77024,
    "c": 0.12,
    "h": 240.2
  },
  "luminance": 0.46491
}

Semantic roles & 50–950 ramp

primary
#66BEF9
secondary
#F3D9C8
accent
#5C00E6
background
#FAFCFF
surface
#F4F9FF
border
#CED2D7
text
#0F1417
muted
#7F8285

Preview Lab

Preview with #66BEF9

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

Preview Lab → · Contrast checker → · Palette generator →

#66BEF9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva