#66E4F9#66E4F9

#66E4F9 is a very light, moderate teal. Relative luminance 0.652; OKLCH L 85.6% C 0.115 H 210.1°. Best body text is #000000 at 14.03:1 contrast (WCAG AA passes).

Color values

HEX#66E4F9
RGBrgb(102, 228, 249)
HSLhsl(189, 92%, 69%)
HSVhsv(189, 59%, 98%)
CMYKcmyk(59%, 8.4%, 0%, 2.4%)
CIE-LABlab(84.56, -28.97, -20.72)
CIE-LCHlch(84.56, 35.62, 215.57°)
OKLaboklab(85.56% -0.0992 -0.0574)
OKLCHoklch(85.56% 0.115 210.1)
XYZxyz(50.3147, 65.1460, 99.5270)
Luminance0.6515 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E4F9 #F97B66
analogous
#66F9C4 #66E4F9 #669BF9
triadic
#66E4F9 #F966E4 #E4F966
tetradic
#66E4F9 #C466F9 #F97B66 #9BF966
square
#66E4F9 #C466F9 #F97B66 #9BF966
split-complementary
#66E4F9 #F9669B #F9C466
monochromatic
#09BEDC #2BDAF7 #66E4F9 #A1EEFB #DCF9FE

Accessibility & contrast

On white

1.50
#66E4F9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

14.03
#66E4F9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E4F9
14.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E4F9#FFFFFF#000000##000000
##66E4F91.001.5014.0314.03
#FFFFFF1.501.0021.0021.00
#00000014.0321.001.001.00
##00000014.0321.001.001.00

Color blindness preview

Protanopia (red-blind)
#D2DCFA
Deuteranopia (green-blind)
#BCCCF9
Tritanopia (blue-blind)
#00EEEA
Achromatopsia (no color)
#D3D3D3

Design tokens & code

CSS
--color: #66e4f9;
/* rgb */ color: rgb(102, 228, 249);
/* oklch */ color: oklch(85.6% 0.115 210.1);
Tailwind
colors: {
  custom: {
    50: '#9fecfb',
    500: '#66e4f9',
    950: '#000000',
  },
}
SCSS
$custom: #66e4f9;
$custom-light: #9fecfb;
$custom-dark: #000000;
JSON
{
  "hex": "#66e4f9",
  "rgb": {
    "r": 102,
    "g": 228,
    "b": 249
  },
  "hsl": {
    "h": 188.571,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.85564,
    "c": 0.1146,
    "h": 210.1
  },
  "luminance": 0.65151
}

Semantic roles & 50–950 ramp

primary
#66E4F9
secondary
#D34830
accent
#2100E6
background
#FDFEFF
surface
#F7FDFF
border
#D0D5D7
text
#101617
muted
#818485

Preview Lab

Preview with #66E4F9

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

Preview Lab → · Contrast checker → · Palette generator →

#66E4F9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva