#66DDFD#66DDFD

#66DDFD is a very light, moderate cyan. Relative luminance 0.616; OKLCH L 84.1% C 0.115 H 218.2°. Best body text is #000000 at 13.33:1 contrast (WCAG AA passes).

Color values

HEX	#66DDFD
RGB	rgb(102, 221, 253)
HSL	hsl(193, 97%, 70%)
HSV	hsv(193, 60%, 99%)
CMYK	cmyk(59.7%, 12.6%, 0%, 0.8%)
CIE-LAB	lab(82.71, -24.41, -25.64)
CIE-LCH	lch(82.71, 35.40, 226.40°)
OKLab	oklab(84.13% -0.0905 -0.0712)
OKLCH	oklch(84.13% 0.115 218.2)
XYZ	xyz(49.0584, 61.6246, 102.2188)
Luminance	0.6163 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DDFD #FD8666

analogous

#66FDD1 #66DDFD #6692FD

triadic

#66DDFD #FD66DD #DDFD66

tetradic

#66DDFD #D166FD #FD8666 #92FD66

square

#66DDFD #D166FD #FD8666 #92FD66

split-complementary

#66DDFD #FD6692 #FDD166

monochromatic

#03B6E6 #2AD0FC #66DDFD #A2EAFE #DFF8FF

Accessibility & contrast

On white

1.58

#66DDFD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.33

#66DDFD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DDFD

13.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DDFD	#FFFFFF	#000000	##000000
##66DDFD	1.00	1.58	13.33	13.33
#FFFFFF	1.58	1.00	21.00	21.00
#000000	13.33	21.00	1.00	1.00
##000000	13.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8D7FF

Deuteranopia (green-blind)

#B2C7FD

Tritanopia (blue-blind)

#00E8E7

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #66ddfd;
/* rgb */ color: rgb(102, 221, 253);
/* oklch */ color: oklch(84.1% 0.115 218.2);

Tailwind

colors: {
  custom: {
    50: '#9fe7fe',
    500: '#66ddfd',
    950: '#000000',
  },
}

SCSS

$custom: #66ddfd;
$custom-light: #9fe7fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66ddfd",
  "rgb": {
    "r": 102,
    "g": 221,
    "b": 253
  },
  "hsl": {
    "h": 192.715,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.84127,
    "c": 0.11515,
    "h": 218.2
  },
  "luminance": 0.6163
}

Semantic roles & 50–950 ramp

primary

#66DDFD

secondary

#D8532F

accent

#3100E6

background

#FDFEFF

surface

#F7FCFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66DDFD

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

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