#66B3F7#66B3F7

#66B3F7 is a light, vivid cyan. Relative luminance 0.418; OKLCH L 74.5% C 0.125 H 247.0°. Best body text is #000000 at 9.36:1 contrast (WCAG AA passes).

Color values

HEX#66B3F7
RGBrgb(102, 179, 247)
HSLhsl(208, 90%, 68%)
HSVhsv(208, 59%, 97%)
CMYKcmyk(58.7%, 27.5%, 0%, 3.1%)
CIE-LABlab(70.72, -4.21, -40.94)
CIE-LCHlch(70.72, 41.15, 264.13°)
OKLaboklab(74.51% -0.0488 -0.1151)
OKLCHoklch(74.51% 0.125 247)
XYZxyz(38.3819, 41.7769, 94.0187)
Luminance0.4178 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B3F7 #F7AA66
analogous
#66F7F2 #66B3F7 #666AF7
triadic
#66B3F7 #F766B3 #B3F766
tetradic
#66B3F7 #F266F7 #F7AA66 #6AF766
square
#66B3F7 #F266F7 #F7AA66 #6AF766
split-complementary
#66B3F7 #F7666A #F7F266
monochromatic
#0B78D7 #2C96F4 #66B3F7 #A0D0FA #DAEDFD

Accessibility & contrast

On white

2.24
#66B3F7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.36
#66B3F7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B3F7
9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B3F7#FFFFFF#000000##000000
##66B3F71.002.249.369.36
#FFFFFF2.241.0021.0021.00
#0000009.3621.001.001.00
##0000009.3621.001.001.00

Color blindness preview

Protanopia (red-blind)
#96B5FA
Deuteranopia (green-blind)
#82A7F6
Tritanopia (blue-blind)
#00C3CB
Achromatopsia (no color)
#ADADAD

Design tokens & code

CSS
--color: #66b3f7;
/* rgb */ color: rgb(102, 179, 247);
/* oklch */ color: oklch(74.5% 0.125 247.0);
Tailwind
colors: {
  custom: {
    50: '#9cc9fa',
    500: '#66b3f7',
    950: '#000000',
  },
}
SCSS
$custom: #66b3f7;
$custom-light: #9cc9fa;
$custom-dark: #000000;
JSON
{
  "hex": "#66b3f7",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 247
  },
  "hsl": {
    "h": 208.138,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.74513,
    "c": 0.12506,
    "h": 247
  },
  "luminance": 0.4178
}

Semantic roles & 50–950 ramp

primary
#66B3F7
secondary
#F2DBC7
accent
#6C00E6
background
#FAFCFF
surface
#F4F8FF
border
#CED1D7
text
#0F1317
muted
#7F8285

Preview Lab

Preview with #66B3F7

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

Preview Lab → · Contrast checker → · Palette generator →

#66B3F7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva