#66DDF5#66DDF5

#66DDF5 is a very light, moderate cyan. Relative luminance 0.611; OKLCH L 83.8% C 0.111 H 212.9°. Best body text is #000000 at 13.23:1 contrast (WCAG AA passes).

Color values

HEX	#66DDF5
RGB	rgb(102, 221, 245)
HSL	hsl(190, 88%, 68%)
HSV	hsv(190, 58%, 96%)
CMYK	cmyk(58.4%, 9.8%, 0%, 3.9%)
CIE-LAB	lab(82.45, -26.69, -21.81)
CIE-LCH	lch(82.45, 34.47, 219.25°)
OKLab	oklab(83.82% -0.0935 -0.0605)
OKLCH	oklch(83.82% 0.111 212.9)
XYZ	xyz(47.8107, 61.1255, 95.6473)
Luminance	0.6113 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DDF5 #F57E66

analogous

#66F5C5 #66DDF5 #6695F5

triadic

#66DDF5 #F566DD #DDF566

tetradic

#66DDF5 #C566F5 #F57E66 #95F566

square

#66DDF5 #C566F5 #F57E66 #95F566

split-complementary

#66DDF5 #F56695 #F5C566

monochromatic

#0EB2D3 #2DD0F1 #66DDF5 #9FEAF9 #D9F7FD

Accessibility & contrast

On white

1.59

#66DDF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.23

#66DDF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DDF5

13.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DDF5	#FFFFFF	#000000	##000000
##66DDF5	1.00	1.59	13.23	13.23
#FFFFFF	1.59	1.00	21.00	21.00
#000000	13.23	21.00	1.00	1.00
##000000	13.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBD6F6

Deuteranopia (green-blind)

#B5C6F5

Tritanopia (blue-blind)

#00E7E4

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #66ddf5;
/* rgb */ color: rgb(102, 221, 245);
/* oklch */ color: oklch(83.8% 0.111 212.9);

Tailwind

colors: {
  custom: {
    50: '#9ee7f8',
    500: '#66ddf5',
    950: '#000000',
  },
}

SCSS

$custom: #66ddf5;
$custom-light: #9ee7f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66ddf5",
  "rgb": {
    "r": 102,
    "g": 221,
    "b": 245
  },
  "hsl": {
    "h": 190.07,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.83824,
    "c": 0.11135,
    "h": 212.9
  },
  "luminance": 0.6113
}

Semantic roles & 50–950 ramp

primary

#66DDF5

secondary

#CE4C31

accent

#2701E4

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DDF5

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

Preview Lab → · Contrast checker → · Palette generator →