#66DDF7#66DDF7

#66DDF7 is a very light, moderate cyan. Relative luminance 0.613; OKLCH L 83.9% C 0.112 H 214.3°. Best body text is #000000 at 13.25:1 contrast (WCAG AA passes).

Color values

HEX	#66DDF7
RGB	rgb(102, 221, 247)
HSL	hsl(191, 90%, 68%)
HSV	hsv(191, 59%, 97%)
CMYK	cmyk(58.7%, 10.5%, 0%, 3.1%)
CIE-LAB	lab(82.51, -26.12, -22.77)
CIE-LCH	lch(82.51, 34.65, 221.07°)
OKLab	oklab(83.9% -0.0927 -0.0632)
OKLCH	oklch(83.9% 0.112 214.3)
XYZ	xyz(48.1177, 61.2483, 97.2639)
Luminance	0.6125 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DDF7 #F78066

analogous

#66F7C9 #66DDF7 #6694F7

triadic

#66DDF7 #F766DD #DDF766

tetradic

#66DDF7 #C966F7 #F78066 #94F766

square

#66DDF7 #C966F7 #F78066 #94F766

split-complementary

#66DDF7 #F76694 #F7C966

monochromatic

#0BB3D7 #2CD0F4 #66DDF7 #A0EAFA #DAF7FD

Accessibility & contrast

On white

1.58

#66DDF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.25

#66DDF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DDF7

13.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DDF7	#FFFFFF	#000000	##000000
##66DDF7	1.00	1.58	13.25	13.25
#FFFFFF	1.58	1.00	21.00	21.00
#000000	13.25	21.00	1.00	1.00
##000000	13.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAD7F9

Deuteranopia (green-blind)

#B4C6F7

Tritanopia (blue-blind)

#00E7E5

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #66ddf7;
/* rgb */ color: rgb(102, 221, 247);
/* oklch */ color: oklch(83.9% 0.112 214.3);

Tailwind

colors: {
  custom: {
    50: '#9ee7f9',
    500: '#66ddf7',
    950: '#000000',
  },
}

SCSS

$custom: #66ddf7;
$custom-light: #9ee7f9;
$custom-dark: #000000;

JSON

{
  "hex": "#66ddf7",
  "rgb": {
    "r": 102,
    "g": 221,
    "b": 247
  },
  "hsl": {
    "h": 190.759,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.83898,
    "c": 0.1122,
    "h": 214.3
  },
  "luminance": 0.61253
}

Semantic roles & 50–950 ramp

primary

#66DDF7

secondary

#D04D31

accent

#2900E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DDF7

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

Preview Lab → · Contrast checker → · Palette generator →