#66AFFD#66AFFD

#66AFFD is a light, vivid cyan. Relative luminance 0.406; OKLCH L 73.9% C 0.135 H 251.5°. Best body text is #000000 at 9.12:1 contrast (WCAG AA passes).

Color values

HEX#66AFFD
RGBrgb(102, 175, 253)
HSLhsl(211, 97%, 70%)
HSVhsv(211, 60%, 99%)
CMYKcmyk(59.7%, 30.8%, 0%, 0.8%)
CIE-LABlab(69.88, -0.10, -45.51)
CIE-LCHlch(69.88, 45.51, 269.88°)
OKLaboklab(73.94% -0.0429 -0.1284)
OKLCHoklch(73.94% 0.135 251.5)
XYZxyz(38.5327, 40.5730, 98.7102)
Luminance0.4058 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66AFFD #FDB466
analogous
#66FBFD #66AFFD #6966FD
triadic
#66AFFD #FD66AF #AFFD66
tetradic
#66AFFD #FD66FB #FDB466 #66FD69
square
#66AFFD #FD66FB #FDB466 #66FD69
split-complementary
#66AFFD #FD6966 #FBFD66
monochromatic
#0371E6 #2A8FFC #66AFFD #A2CFFE #DFEEFF

Accessibility & contrast

On white

2.30
#66AFFD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.12
#66AFFD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AFFD
9.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66AFFD#FFFFFF#000000##000000
##66AFFD1.002.309.129.12
#FFFFFF2.301.0021.0021.00
#0000009.1221.001.001.00
##0000009.1221.001.001.00

Color blindness preview

Protanopia (red-blind)
#8EB3FF
Deuteranopia (green-blind)
#7AA4FB
Tritanopia (blue-blind)
#00C1CB
Achromatopsia (no color)
#ABABAB

Design tokens & code

CSS
--color: #66affd;
/* rgb */ color: rgb(102, 175, 253);
/* oklch */ color: oklch(73.9% 0.135 251.5);
Tailwind
colors: {
  custom: {
    50: '#9dc6fe',
    500: '#66affd',
    950: '#000000',
  },
}
SCSS
$custom: #66affd;
$custom-light: #9dc6fe;
$custom-dark: #000000;
JSON
{
  "hex": "#66affd",
  "rgb": {
    "r": 102,
    "g": 175,
    "b": 253
  },
  "hsl": {
    "h": 210.993,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.73939,
    "c": 0.13541,
    "h": 251.5
  },
  "luminance": 0.40577
}

Semantic roles & 50–950 ramp

primary
#66AFFD
secondary
#F5E0CA
accent
#7700E6
background
#FAFCFF
surface
#F4F8FF
border
#CED1D7
text
#0F1318
muted
#7F8286

Preview Lab

Preview with #66AFFD

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

Preview Lab → · Contrast checker → · Palette generator →

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