#66C8FD#66C8FD

#66C8FD is a light, moderate cyan. Relative luminance 0.512; OKLCH L 79.4% C 0.119 H 234.7°. Best body text is #000000 at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#66C8FD
RGB	rgb(102, 200, 253)
HSL	hsl(201, 97%, 70%)
HSV	hsv(201, 60%, 99%)
CMYK	cmyk(59.7%, 20.9%, 0%, 0.8%)
CIE-LAB	lab(76.81, -13.69, -34.70)
CIE-LCH	lch(76.81, 37.30, 248.47°)
OKLab	oklab(79.42% -0.0688 -0.0971)
OKLCH	oklch(79.42% 0.119 234.7)
XYZ	xyz(43.8566, 51.2209, 100.4849)
Luminance	0.5122 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8FD #FD9B66

analogous

#66FDE7 #66C8FD #667CFD

triadic

#66C8FD #FD66C8 #C8FD66

tetradic

#66C8FD #E766FD #FD9B66 #7CFD66

square

#66C8FD #E766FD #FD9B66 #7CFD66

split-complementary

#66C8FD #FD667C #FDE766

monochromatic

#0396E6 #2AB2FC #66C8FD #A2DEFE #DFF3FF

Accessibility & contrast

On white

1.87

#66C8FD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.25

#66C8FD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8FD

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8FD	#FFFFFF	#000000	##000000
##66C8FD	1.00	1.87	11.25	11.25
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.25	21.00	1.00	1.00
##000000	11.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFC6FF

Deuteranopia (green-blind)

#9AB7FC

Tritanopia (blue-blind)

#00D6DA

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #66c8fd;
/* rgb */ color: rgb(102, 200, 253);
/* oklch */ color: oklch(79.4% 0.119 234.7);

Tailwind

colors: {
  custom: {
    50: '#9ed8fe',
    500: '#66c8fd',
    950: '#000000',
  },
}

SCSS

$custom: #66c8fd;
$custom-light: #9ed8fe;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8fd",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 253
  },
  "hsl": {
    "h": 201.06,
    "s": 97.419,
    "l": 69.608
  },
  "oklch": {
    "l": 0.79417,
    "c": 0.11899,
    "h": 234.7
  },
  "luminance": 0.51225
}

Semantic roles & 50–950 ramp

primary

#66C8FD

secondary

#D86B2F

accent

#5100E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8FD

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

Preview Lab → · Contrast checker → · Palette generator →