#66AAF9#66AAF9

#66AAF9 is a light, vivid cyan. Relative luminance 0.384; OKLCH L 72.7% C 0.135 H 253.3°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX#66AAF9
RGBrgb(102, 170, 249)
HSLhsl(212, 92%, 69%)
HSVhsv(212, 59%, 98%)
CMYKcmyk(59%, 31.7%, 0%, 2.4%)
CIE-LABlab(68.32, 1.45, -45.78)
CIE-LCHlch(68.32, 45.80, 271.82°)
OKLaboklab(72.66% -0.0388 -0.1292)
OKLCHoklch(72.66% 0.135 253.3)
XYZxyz(36.9470, 38.4105, 95.0711)
Luminance0.3841 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66AAF9 #F9B566
analogous
#66F4F9 #66AAF9 #6C66F9
triadic
#66AAF9 #F966AA #AAF966
tetradic
#66AAF9 #F966F4 #F9B566 #66F96C
square
#66AAF9 #F966F4 #F9B566 #66F96C
split-complementary
#66AAF9 #F96C66 #F4F966
monochromatic
#096ADC #2B89F7 #66AAF9 #A1CBFB #DCEBFE

Accessibility & contrast

On white

2.42
#66AAF9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.68
#66AAF9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF9
8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66AAF9#FFFFFF#000000##000000
##66AAF91.002.428.688.68
#FFFFFF2.421.0021.0021.00
#0000008.6821.001.001.00
##0000008.6821.001.001.00

Color blindness preview

Protanopia (red-blind)
#89AEFC
Deuteranopia (green-blind)
#75A0F7
Tritanopia (blue-blind)
#00BCC6
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #66aaf9;
/* rgb */ color: rgb(102, 170, 249);
/* oklch */ color: oklch(72.7% 0.135 253.3);
Tailwind
colors: {
  custom: {
    50: '#9cc3fb',
    500: '#66aaf9',
    950: '#000000',
  },
}
SCSS
$custom: #66aaf9;
$custom-light: #9cc3fb;
$custom-dark: #000000;
JSON
{
  "hex": "#66aaf9",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 249
  },
  "hsl": {
    "h": 212.245,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.72661,
    "c": 0.13494,
    "h": 253.3
  },
  "luminance": 0.38414
}

Semantic roles & 50–950 ramp

primary
#66AAF9
secondary
#F3DFC8
accent
#7B00E6
background
#FAFBFF
surface
#F4F7FF
border
#CED0D7
text
#0F1217
muted
#7F8185

Preview Lab

Preview with #66AAF9

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

Preview Lab → · Contrast checker → · Palette generator →

#66AAF9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva