#66CEF5#66CEF5

#66CEF5 is a light, moderate cyan. Relative luminance 0.536; OKLCH L 80.4% C 0.111 H 225.3°. Best body text is #000000 at 11.71:1 contrast (WCAG AA passes).

Color values

HEX#66CEF5
RGBrgb(102, 206, 245)
HSLhsl(196, 88%, 68%)
HSVhsv(196, 58%, 96%)
CMYKcmyk(58.4%, 15.9%, 0%, 3.9%)
CIE-LABlab(78.20, -19.18, -28.28)
CIE-LCHlch(78.20, 34.17, 235.86°)
OKLaboklab(80.43% -0.0779 -0.0787)
OKLCHoklch(80.43% 0.111 225.3)
XYZxyz(44.0258, 53.5557, 94.3856)
Luminance0.5356 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CEF5 #F58D66
analogous
#66F5D5 #66CEF5 #6686F5
triadic
#66CEF5 #F566CE #CEF566
tetradic
#66CEF5 #D566F5 #F58D66 #86F566
square
#66CEF5 #D566F5 #F58D66 #86F566
split-complementary
#66CEF5 #F56686 #F5D566
monochromatic
#0E9DD3 #2DBCF1 #66CEF5 #9FE0F9 #D9F3FD

Accessibility & contrast

On white

1.79
#66CEF5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.71
#66CEF5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEF5
11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CEF5#FFFFFF#000000##000000
##66CEF51.001.7911.7111.71
#FFFFFF1.791.0021.0021.00
#00000011.7121.001.001.00
##00000011.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#B9CAF7
Deuteranopia (green-blind)
#A4BBF5
Tritanopia (blue-blind)
#00DADB
Achromatopsia (no color)
#C1C1C1

Design tokens & code

CSS
--color: #66cef5;
/* rgb */ color: rgb(102, 206, 245);
/* oklch */ color: oklch(80.4% 0.111 225.3);
Tailwind
colors: {
  custom: {
    50: '#9dddf8',
    500: '#66cef5',
    950: '#000000',
  },
}
SCSS
$custom: #66cef5;
$custom-light: #9dddf8;
$custom-dark: #000000;
JSON
{
  "hex": "#66cef5",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 245
  },
  "hsl": {
    "h": 196.364,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.80426,
    "c": 0.11074,
    "h": 225.3
  },
  "luminance": 0.5356
}

Semantic roles & 50–950 ramp

primary
#66CEF5
secondary
#CE5C31
accent
#3F01E4
background
#FCFEFF
surface
#F6FCFF
border
#D0D5D7
text
#0F1517
muted
#808485

Preview Lab

Preview with #66CEF5

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

Preview Lab → · Contrast checker → · Palette generator →

#66CEF5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva