#66E9F9#66E9F9

#66E9F9 is a very light, moderate teal. Relative luminance 0.679; OKLCH L 86.7% C 0.116 H 206.3°. Best body text is #000000 at 14.59:1 contrast (WCAG AA passes).

Color values

HEX#66E9F9
RGBrgb(102, 233, 249)
HSLhsl(187, 92%, 69%)
HSVhsv(187, 59%, 98%)
CMYKcmyk(59%, 6.4%, 0%, 2.4%)
CIE-LABlab(85.97, -31.37, -18.58)
CIE-LCHlch(85.97, 36.46, 210.64°)
OKLaboklab(86.7% -0.1043 -0.0514)
OKLCHoklch(86.7% 0.116 206.3)
XYZxyz(51.7102, 67.9369, 99.9921)
Luminance0.6794 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E9F9 #F97666
analogous
#66F9C0 #66E9F9 #66A0F9
triadic
#66E9F9 #F966E9 #E9F966
tetradic
#66E9F9 #C066F9 #F97666 #A0F966
square
#66E9F9 #C066F9 #F97666 #A0F966
split-complementary
#66E9F9 #F966A0 #F9C066
monochromatic
#09C5DC #2BE1F7 #66E9F9 #A1F1FB #DCFAFE

Accessibility & contrast

On white

1.44
#66E9F9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

14.59
#66E9F9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E9F9
14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E9F9#FFFFFF#000000##000000
##66E9F91.001.4414.5914.59
#FFFFFF1.441.0021.0021.00
#00000014.5921.001.001.00
##00000014.5921.001.001.00

Color blindness preview

Protanopia (red-blind)
#D8E1FA
Deuteranopia (green-blind)
#C1D0F9
Tritanopia (blue-blind)
#00F2EE
Achromatopsia (no color)
#D7D7D7

Design tokens & code

CSS
--color: #66e9f9;
/* rgb */ color: rgb(102, 233, 249);
/* oklch */ color: oklch(86.7% 0.116 206.3);
Tailwind
colors: {
  custom: {
    50: '#9ff0fb',
    500: '#66e9f9',
    950: '#000000',
  },
}
SCSS
$custom: #66e9f9;
$custom-light: #9ff0fb;
$custom-dark: #000000;
JSON
{
  "hex": "#66e9f9",
  "rgb": {
    "r": 102,
    "g": 233,
    "b": 249
  },
  "hsl": {
    "h": 186.531,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.86703,
    "c": 0.11629,
    "h": 206.3
  },
  "luminance": 0.67942
}

Semantic roles & 50–950 ramp

primary
#66E9F9
secondary
#D34230
accent
#1900E6
background
#FDFFFF
surface
#F7FEFF
border
#D0D6D7
text
#101617
muted
#818585

Preview Lab

Preview with #66E9F9

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

Preview Lab → · Contrast checker → · Palette generator →

#66E9F9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva