#66CEFD#66CEFD

#66CEFD is a light, moderate cyan. Relative luminance 0.541; OKLCH L 80.8% C 0.117 H 230.1°. Best body text is #000000 at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#66CEFD
RGB	rgb(102, 206, 253)
HSL	hsl(199, 97%, 70%)
HSV	hsv(199, 60%, 99%)
CMYK	cmyk(59.7%, 18.6%, 0%, 0.8%)
CIE-LAB	lab(78.49, -16.81, -32.10)
CIE-LCH	lch(78.49, 36.24, 242.36°)
OKLab	oklab(80.76% -0.075 -0.0896)
OKLCH	oklch(80.76% 0.117 230.1)
XYZ	xyz(45.2736, 54.0548, 100.9572)
Luminance	0.5406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CEFD #FD9566

analogous

#66FDE0 #66CEFD #6683FD

triadic

#66CEFD #FD66CE #CEFD66

tetradic

#66CEFD #E066FD #FD9566 #83FD66

square

#66CEFD #E066FD #FD9566 #83FD66

split-complementary

#66CEFD #FD6683 #FDE066

monochromatic

#039FE6 #2ABBFC #66CEFD #A2E1FE #DFF5FF

Accessibility & contrast

On white

1.78

#66CEFD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.81

#66CEFD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CEFD

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CEFD	#FFFFFF	#000000	##000000
##66CEFD	1.00	1.78	11.81	11.81
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.81	21.00	1.00	1.00
##000000	11.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6CBFF

Deuteranopia (green-blind)

#A1BBFC

Tritanopia (blue-blind)

#00DBDD

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66cefd;
/* rgb */ color: rgb(102, 206, 253);
/* oklch */ color: oklch(80.8% 0.117 230.1);

Tailwind

colors: {
  custom: {
    50: '#9eddfe',
    500: '#66cefd',
    950: '#000000',
  },
}

SCSS

$custom: #66cefd;
$custom-light: #9eddfe;
$custom-dark: #000000;

JSON

{
  "hex": "#66cefd",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 253
  },
  "hsl": {
    "h": 198.675,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.80755,
    "c": 0.11689,
    "h": 230.1
  },
  "luminance": 0.54059
}

Semantic roles & 50–950 ramp

primary

#66CEFD

secondary

#D8642F

accent

#4700E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66CEFD

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

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