#66CCF5#66CCF5

#66CCF5 is a light, moderate cyan. Relative luminance 0.526; OKLCH L 80.0% C 0.111 H 227.0°. Best body text is #000000 at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#66CCF5
RGB	rgb(102, 204, 245)
HSL	hsl(197, 88%, 68%)
HSV	hsv(197, 58%, 96%)
CMYK	cmyk(58.4%, 16.7%, 0%, 3.9%)
CIE-LAB	lab(77.64, -18.15, -29.15)
CIE-LCH	lch(77.64, 34.34, 238.09°)
OKLab	oklab(79.97% -0.0758 -0.0812)
OKLCH	oklch(79.97% 0.111 227)
XYZ	xyz(43.5474, 52.5989, 94.2262)
Luminance	0.5260 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CCF5 #F58F66

analogous

#66F5D7 #66CCF5 #6684F5

triadic

#66CCF5 #F566CC #CCF566

tetradic

#66CCF5 #D766F5 #F58F66 #84F566

square

#66CCF5 #D766F5 #F58F66 #84F566

split-complementary

#66CCF5 #F56684 #F5D766

monochromatic

#0E9AD3 #2DB9F1 #66CCF5 #9FDFF9 #D9F2FD

Accessibility & contrast

On white

1.82

#66CCF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.52

#66CCF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CCF5

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CCF5	#FFFFFF	#000000	##000000
##66CCF5	1.00	1.82	11.52	11.52
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.52	21.00	1.00	1.00
##000000	11.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6C8F7

Deuteranopia (green-blind)

#A2B9F5

Tritanopia (blue-blind)

#00D8D9

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #66ccf5;
/* rgb */ color: rgb(102, 204, 245);
/* oklch */ color: oklch(80.0% 0.111 227.0);

Tailwind

colors: {
  custom: {
    50: '#9ddbf8',
    500: '#66ccf5',
    950: '#000000',
  },
}

SCSS

$custom: #66ccf5;
$custom-light: #9ddbf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66ccf5",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 245
  },
  "hsl": {
    "h": 197.203,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.79975,
    "c": 0.11106,
    "h": 227
  },
  "luminance": 0.52603
}

Semantic roles & 50–950 ramp

primary

#66CCF5

secondary

#CE5E31

accent

#4201E4

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CCF5

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

Preview Lab → · Contrast checker → · Palette generator →