#66D4F8#66D4F8

#66D4F8 is a light, moderate cyan. Relative luminance 0.567; OKLCH L 81.9% C 0.112 H 222.3°. Best body text is #000000 at 12.34:1 contrast (WCAG AA passes).

Color values

HEX#66D4F8
RGBrgb(102, 212, 248)
HSLhsl(195, 91%, 69%)
HSVhsv(195, 59%, 97%)
CMYKcmyk(58.9%, 14.5%, 0%, 2.7%)
CIE-LABlab(80.00, -21.35, -27.13)
CIE-LCHlch(80.00, 34.52, 231.79°)
OKLaboklab(81.9% -0.083 -0.0755)
OKLCHoklch(81.9% 0.112 222.3)
XYZxyz(45.9596, 56.6845, 97.3079)
Luminance0.5669 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66D4F8 #F88A66
analogous
#66F8D3 #66D4F8 #668BF8
triadic
#66D4F8 #F866D4 #D4F866
tetradic
#66D4F8 #D366F8 #F88A66 #8BF866
square
#66D4F8 #D366F8 #F88A66 #8BF866
split-complementary
#66D4F8 #F8668B #F8D366
monochromatic
#0AA6DA #2BC4F5 #66D4F8 #A1E4FB #DBF5FD

Accessibility & contrast

On white

1.70
#66D4F8 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.34
#66D4F8 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D4F8
12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66D4F8#FFFFFF#000000##000000
##66D4F81.001.7012.3412.34
#FFFFFF1.701.0021.0021.00
#00000012.3421.001.001.00
##00000012.3421.001.001.00

Color blindness preview

Protanopia (red-blind)
#BFCFFA
Deuteranopia (green-blind)
#AAC0F8
Tritanopia (blue-blind)
#00DFDF
Achromatopsia (no color)
#C6C6C6

Design tokens & code

CSS
--color: #66d4f8;
/* rgb */ color: rgb(102, 212, 248);
/* oklch */ color: oklch(81.9% 0.112 222.3);
Tailwind
colors: {
  custom: {
    50: '#9ee1fa',
    500: '#66d4f8',
    950: '#000000',
  },
}
SCSS
$custom: #66d4f8;
$custom-light: #9ee1fa;
$custom-dark: #000000;
JSON
{
  "hex": "#66d4f8",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 248
  },
  "hsl": {
    "h": 194.795,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.81899,
    "c": 0.1122,
    "h": 222.3
  },
  "luminance": 0.56689
}

Semantic roles & 50–950 ramp

primary
#66D4F8
secondary
#D25831
accent
#3900E6
background
#FCFEFF
surface
#F6FCFF
border
#D0D5D7
text
#101517
muted
#808485

Preview Lab

Preview with #66D4F8

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

Preview Lab → · Contrast checker → · Palette generator →

#66D4F8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva