#66DEFD#66DEFD

#66DEFD is a very light, moderate cyan. Relative luminance 0.622; OKLCH L 84.4% C 0.115 H 217.4°. Best body text is #000000 at 13.43:1 contrast (WCAG AA passes).

Color values

HEX	#66DEFD
RGB	rgb(102, 222, 253)
HSL	hsl(192, 97%, 70%)
HSV	hsv(192, 60%, 99%)
CMYK	cmyk(59.7%, 12.3%, 0%, 0.8%)
CIE-LAB	lab(83.00, -24.91, -25.21)
CIE-LCH	lch(83.00, 35.44, 225.35°)
OKLab	oklab(84.35% -0.0915 -0.07)
OKLCH	oklch(84.35% 0.115 217.4)
XYZ	xyz(49.3233, 62.1542, 102.3071)
Luminance	0.6216 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DEFD #FD8566

analogous

#66FDD1 #66DEFD #6693FD

triadic

#66DEFD #FD66DE #DEFD66

tetradic

#66DEFD #D166FD #FD8566 #93FD66

square

#66DEFD #D166FD #FD8566 #93FD66

split-complementary

#66DEFD #FD6693 #FDD166

monochromatic

#03B7E6 #2AD1FC #66DEFD #A2EBFE #DFF8FF

Accessibility & contrast

On white

1.56

#66DEFD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.43

#66DEFD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DEFD

13.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DEFD	#FFFFFF	#000000	##000000
##66DEFD	1.00	1.56	13.43	13.43
#FFFFFF	1.56	1.00	21.00	21.00
#000000	13.43	21.00	1.00	1.00
##000000	13.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAD8FF

Deuteranopia (green-blind)

#B3C8FD

Tritanopia (blue-blind)

#00E9E8

Achromatopsia (no color)

#CFCFCF

Design tokens & code

CSS

--color: #66defd;
/* rgb */ color: rgb(102, 222, 253);
/* oklch */ color: oklch(84.4% 0.115 217.4);

Tailwind

colors: {
  custom: {
    50: '#9fe8fe',
    500: '#66defd',
    950: '#000000',
  },
}

SCSS

$custom: #66defd;
$custom-light: #9fe8fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66defd",
  "rgb": {
    "r": 102,
    "g": 222,
    "b": 253
  },
  "hsl": {
    "h": 192.318,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.84353,
    "c": 0.11522,
    "h": 217.4
  },
  "luminance": 0.62159
}

Semantic roles & 50–950 ramp

primary

#66DEFD

secondary

#D8522F

accent

#2F00E6

background

#FDFEFF

surface

#F7FCFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66DEFD

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

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