#66C8F6#66C8F6

#66C8F6 is a light, moderate cyan. Relative luminance 0.508; OKLCH L 79.1% C 0.113 H 230.9°. Best body text is #000000 at 11.16:1 contrast (WCAG AA passes).

Color values

HEX#66C8F6
RGBrgb(102, 200, 246)
HSLhsl(199, 89%, 68%)
HSVhsv(199, 59%, 96%)
CMYKcmyk(58.5%, 18.7%, 0%, 3.5%)
CIE-LABlab(76.55, -15.78, -31.36)
CIE-LCHlch(76.55, 35.11, 243.28°)
OKLaboklab(79.12% -0.0712 -0.0875)
OKLCHoklch(79.12% 0.113 230.9)
XYZxyz(42.7619, 50.7831, 94.7195)
Luminance0.5079 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C8F6 #F69466
analogous
#66F6DC #66C8F6 #6680F6
triadic
#66C8F6 #F666C8 #C8F666
tetradic
#66C8F6 #DC66F6 #F69466 #80F666
square
#66C8F6 #DC66F6 #F69466 #80F666
split-complementary
#66C8F6 #F66680 #F6DC66
monochromatic
#0D95D5 #2CB3F3 #66C8F6 #A0DDF9 #DAF2FD

Accessibility & contrast

On white

1.88
#66C8F6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.16
#66C8F6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8F6
11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C8F6#FFFFFF#000000##000000
##66C8F61.001.8811.1611.16
#FFFFFF1.881.0021.0021.00
#00000011.1621.001.001.00
##00000011.1621.001.001.00

Color blindness preview

Protanopia (red-blind)
#B1C5F8
Deuteranopia (green-blind)
#9DB6F5
Tritanopia (blue-blind)
#00D5D7
Achromatopsia (no color)
#BDBDBD

Design tokens & code

CSS
--color: #66c8f6;
/* rgb */ color: rgb(102, 200, 246);
/* oklch */ color: oklch(79.1% 0.113 230.9);
Tailwind
colors: {
  custom: {
    50: '#9dd8f9',
    500: '#66c8f6',
    950: '#000000',
  },
}
SCSS
$custom: #66c8f6;
$custom-light: #9dd8f9;
$custom-dark: #000000;
JSON
{
  "hex": "#66c8f6",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 246
  },
  "hsl": {
    "h": 199.167,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.79119,
    "c": 0.11283,
    "h": 230.9
  },
  "luminance": 0.50787
}

Semantic roles & 50–950 ramp

primary
#66C8F6
secondary
#CF6431
accent
#4900E6
background
#FCFEFF
surface
#F6FBFF
border
#D0D4D7
text
#0F1417
muted
#808385

Preview Lab

Preview with #66C8F6

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

Preview Lab → · Contrast checker → · Palette generator →

#66C8F6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva