#66AAF8#66AAF8

#66AAF8 is a light, vivid cyan. Relative luminance 0.384; OKLCH L 72.6% C 0.134 H 253.0°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX#66AAF8
RGBrgb(102, 170, 248)
HSLhsl(212, 91%, 69%)
HSVhsv(212, 59%, 97%)
CMYKcmyk(58.9%, 31.5%, 0%, 2.7%)
CIE-LABlab(68.28, 1.13, -45.30)
CIE-LCHlch(68.28, 45.32, 271.43°)
OKLaboklab(72.61% -0.039 -0.1279)
OKLCHoklch(72.61% 0.134 253)
XYZxyz(36.7914, 38.3482, 94.2518)
Luminance0.3835 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66AAF8 #F8B466
analogous
#66F3F8 #66AAF8 #6B66F8
triadic
#66AAF8 #F866AA #AAF866
tetradic
#66AAF8 #F866F3 #F8B466 #66F86B
square
#66AAF8 #F866F3 #F8B466 #66F86B
split-complementary
#66AAF8 #F86B66 #F3F866
monochromatic
#0A6BDA #2B89F5 #66AAF8 #A1CBFB #DBEBFD

Accessibility & contrast

On white

2.42
#66AAF8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.67
#66AAF8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF8
8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66AAF8#FFFFFF#000000##000000
##66AAF81.002.428.678.67
#FFFFFF2.421.0021.0021.00
#0000008.6721.001.001.00
##0000008.6721.001.001.00

Color blindness preview

Protanopia (red-blind)
#89AEFB
Deuteranopia (green-blind)
#76A0F6
Tritanopia (blue-blind)
#00BCC6
Achromatopsia (no color)
#A6A6A6

Design tokens & code

CSS
--color: #66aaf8;
/* rgb */ color: rgb(102, 170, 248);
/* oklch */ color: oklch(72.6% 0.134 253.0);
Tailwind
colors: {
  custom: {
    50: '#9cc3fb',
    500: '#66aaf8',
    950: '#000000',
  },
}
SCSS
$custom: #66aaf8;
$custom-light: #9cc3fb;
$custom-dark: #000000;
JSON
{
  "hex": "#66aaf8",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 248
  },
  "hsl": {
    "h": 212.055,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.72611,
    "c": 0.13371,
    "h": 253
  },
  "luminance": 0.38352
}

Semantic roles & 50–950 ramp

primary
#66AAF8
secondary
#F3DEC7
accent
#7B00E6
background
#FAFBFF
surface
#F4F7FF
border
#CED0D7
text
#0F1217
muted
#7F8185

Preview Lab

Preview with #66AAF8

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

Preview Lab → · Contrast checker → · Palette generator →

#66AAF8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva