#66E5F9#66E5F9

#66E5F9 is a very light, moderate teal. Relative luminance 0.657; OKLCH L 85.8% C 0.115 H 209.3°. Best body text is #000000 at 14.14:1 contrast (WCAG AA passes).

Color values

HEX#66E5F9
RGBrgb(102, 229, 249)
HSLhsl(188, 92%, 69%)
HSVhsv(188, 59%, 98%)
CMYKcmyk(59%, 8%, 0%, 2.4%)
CIE-LABlab(84.84, -29.45, -20.29)
CIE-LCHlch(84.84, 35.77, 214.57°)
OKLaboklab(85.79% -0.1002 -0.0562)
OKLCHoklch(85.79% 0.115 209.3)
XYZxyz(50.5906, 65.6978, 99.6190)
Luminance0.6570 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E5F9 #F97A66
analogous
#66F9C4 #66E5F9 #669CF9
triadic
#66E5F9 #F966E5 #E5F966
tetradic
#66E5F9 #C466F9 #F97A66 #9CF966
square
#66E5F9 #C466F9 #F97A66 #9CF966
split-complementary
#66E5F9 #F9669C #F9C466
monochromatic
#09BFDC #2BDBF7 #66E5F9 #A1EFFB #DCF9FE

Accessibility & contrast

On white

1.49
#66E5F9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

14.14
#66E5F9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E5F9
14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E5F9#FFFFFF#000000##000000
##66E5F91.001.4914.1414.14
#FFFFFF1.491.0021.0021.00
#00000014.1421.001.001.00
##00000014.1421.001.001.00

Color blindness preview

Protanopia (red-blind)
#D3DDFA
Deuteranopia (green-blind)
#BDCDF9
Tritanopia (blue-blind)
#00EEEB
Achromatopsia (no color)
#D4D4D4

Design tokens & code

CSS
--color: #66e5f9;
/* rgb */ color: rgb(102, 229, 249);
/* oklch */ color: oklch(85.8% 0.115 209.3);
Tailwind
colors: {
  custom: {
    50: '#9fedfb',
    500: '#66e5f9',
    950: '#000000',
  },
}
SCSS
$custom: #66e5f9;
$custom-light: #9fedfb;
$custom-dark: #000000;
JSON
{
  "hex": "#66e5f9",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 249
  },
  "hsl": {
    "h": 188.163,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.85792,
    "c": 0.1149,
    "h": 209.3
  },
  "luminance": 0.65703
}

Semantic roles & 50–950 ramp

primary
#66E5F9
secondary
#D34730
accent
#1F00E6
background
#FDFFFF
surface
#F7FEFF
border
#D0D6D7
text
#101617
muted
#818585

Preview Lab

Preview with #66E5F9

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

Preview Lab → · Contrast checker → · Palette generator →

#66E5F9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva