#66AAEA#66AAEA

#66AAEA is a light, moderate cyan. Relative luminance 0.375; OKLCH L 71.9% C 0.117 H 248.4°. Best body text is #000000 at 8.50:1 contrast (WCAG AA passes).

Color values

HEX#66AAEA
RGBrgb(102, 170, 234)
HSLhsl(209, 76%, 66%)
HSVhsv(209, 56%, 92%)
CMYKcmyk(56.4%, 27.4%, 0%, 8.2%)
CIE-LABlab(67.66, -3.24, -38.63)
CIE-LCHlch(67.66, 38.77, 265.20°)
OKLaboklab(71.92% -0.043 -0.1085)
OKLCHoklch(71.92% 0.117 248.4)
XYZxyz(34.7001, 37.5117, 83.2378)
Luminance0.3751 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66AAEA #EAA666
analogous
#66EAE8 #66AAEA #6668EA
triadic
#66AAEA #EA66AA #AAEA66
tetradic
#66AAEA #E866EA #EAA666 #68EA66
square
#66AAEA #E866EA #EAA666 #68EA66
split-complementary
#66AAEA #EA6668 #EAE866
monochromatic
#1A6DBC #308CE3 #66AAEA #9CC8F1 #D2E6F9

Accessibility & contrast

On white

2.47
#66AAEA on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.50
#66AAEA on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAEA
8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66AAEA#FFFFFF#000000##000000
##66AAEA1.002.478.508.50
#FFFFFF2.471.0021.0021.00
#0000008.5021.001.001.00
##0000008.5021.001.001.00

Color blindness preview

Protanopia (red-blind)
#8FACED
Deuteranopia (green-blind)
#7E9FE9
Tritanopia (blue-blind)
#00B9C0
Achromatopsia (no color)
#A5A5A5

Design tokens & code

CSS
--color: #66aaea;
/* rgb */ color: rgb(102, 170, 234);
/* oklch */ color: oklch(71.9% 0.117 248.4);
Tailwind
colors: {
  custom: {
    50: '#9bc3f1',
    500: '#66aaea',
    950: '#000000',
  },
}
SCSS
$custom: #66aaea;
$custom-light: #9bc3f1;
$custom-dark: #000000;
JSON
{
  "hex": "#66aaea",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 234
  },
  "hsl": {
    "h": 209.091,
    "s": 75.862,
    "l": 65.882
  },
  "oklch": {
    "l": 0.71923,
    "c": 0.11677,
    "h": 248.4
  },
  "luminance": 0.37515
}

Semantic roles & 50–950 ramp

primary
#66AAEA
secondary
#ECD5C0
accent
#700DD8
background
#FAFBFE
surface
#F3F7FD
border
#CDD0D5
text
#0F1216
muted
#7F8184

Preview Lab

Preview with #66AAEA

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

Preview Lab → · Contrast checker → · Palette generator →

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