#66C8FF#66C8FF

#66C8FF is a light, vivid cyan. Relative luminance 0.514; OKLCH L 79.5% C 0.121 H 235.7°. Best body text is #000000 at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#66C8FF
RGB	rgb(102, 200, 255)
HSL	hsl(202, 100%, 70%)
HSV	hsv(202, 60%, 100%)
CMYK	cmyk(60%, 21.6%, 0%, 0%)
CIE-LAB	lab(76.89, -13.08, -35.65)
CIE-LCH	lch(76.89, 37.97, 249.85°)
OKLab	oklab(79.5% -0.0681 -0.0998)
OKLCH	oklch(79.5% 0.121 235.7)
XYZ	xyz(44.1769, 51.3490, 102.1716)
Luminance	0.5135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8FF #FF9D66

analogous

#66FFEA #66C8FF #667BFF

triadic

#66C8FF #FF66C8 #C8FF66

tetradic

#66C8FF #EA66FF #FF9D66 #7BFF66

square

#66C8FF #EA66FF #FF9D66 #7BFF66

split-complementary

#66C8FF #FF667B #FFEA66

monochromatic

#0096EB #29B2FF #66C8FF #A3DEFF #E0F4FF

Accessibility & contrast

On white

1.86

#66C8FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.27

#66C8FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8FF

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8FF	#FFFFFF	#000000	##000000
##66C8FF	1.00	1.86	11.27	11.27
#FFFFFF	1.86	1.00	21.00	21.00
#000000	11.27	21.00	1.00	1.00
##000000	11.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC7FF

Deuteranopia (green-blind)

#99B7FE

Tritanopia (blue-blind)

#00D6DA

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #66c8ff;
/* rgb */ color: rgb(102, 200, 255);
/* oklch */ color: oklch(79.5% 0.121 235.7);

Tailwind

colors: {
  custom: {
    50: '#9ed8ff',
    500: '#66c8ff',
    950: '#000000',
  },
}

SCSS

$custom: #66c8ff;
$custom-light: #9ed8ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8ff",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 255
  },
  "hsl": {
    "h": 201.569,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.79504,
    "c": 0.12085,
    "h": 235.7
  },
  "luminance": 0.51353
}

Semantic roles & 50–950 ramp

primary

#66C8FF

secondary

#DA6D2F

accent

#5300E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#101418

muted

#808386

Preview Lab

Preview with #66C8FF

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

Preview Lab → · Contrast checker → · Palette generator →