#66D6FF#66D6FF

#66D6FF is a very light, moderate cyan. Relative luminance 0.581; OKLCH L 82.6% C 0.117 H 225.0°. Best body text is #000000 at 12.63:1 contrast (WCAG AA passes).

Color values

HEX	#66D6FF
RGB	rgb(102, 214, 255)
HSL	hsl(196, 100%, 70%)
HSV	hsv(196, 60%, 100%)
CMYK	cmyk(60%, 16.1%, 0%, 0%)
CIE-LAB	lab(80.81, -20.32, -29.60)
CIE-LCH	lch(80.81, 35.91, 235.53°)
OKLab	oklab(82.63% -0.0826 -0.0825)
OKLCH	oklch(82.63% 0.117 225)
XYZ	xyz(47.5689, 58.1332, 103.3023)
Luminance	0.5814 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D6FF #FF8F66

analogous

#66FFDB #66D6FF #668AFF

triadic

#66D6FF #FF66D6 #D6FF66

tetradic

#66D6FF #DB66FF #FF8F66 #8AFF66

square

#66D6FF #DB66FF #FF8F66 #8AFF66

split-complementary

#66D6FF #FF668A #FFDB66

monochromatic

#00ACEB #29C6FF #66D6FF #A3E6FF #E0F7FF

Accessibility & contrast

On white

1.66

#66D6FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.63

#66D6FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D6FF

12.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D6FF	#FFFFFF	#000000	##000000
##66D6FF	1.00	1.66	12.63	12.63
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.63	21.00	1.00	1.00
##000000	12.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFD2FF

Deuteranopia (green-blind)

#AAC2FF

Tritanopia (blue-blind)

#00E2E3

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #66d6ff;
/* rgb */ color: rgb(102, 214, 255);
/* oklch */ color: oklch(82.6% 0.117 225.0);

Tailwind

colors: {
  custom: {
    50: '#9fe2ff',
    500: '#66d6ff',
    950: '#000000',
  },
}

SCSS

$custom: #66d6ff;
$custom-light: #9fe2ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66d6ff",
  "rgb": {
    "r": 102,
    "g": 214,
    "b": 255
  },
  "hsl": {
    "h": 196.078,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.82629,
    "c": 0.11671,
    "h": 225
  },
  "luminance": 0.58138
}

Semantic roles & 50–950 ramp

primary

#66D6FF

secondary

#DA5D2F

accent

#3D00E6

background

#FDFEFF

surface

#F7FCFF

border

#D0D5D7

text

#101518

muted

#818486

Preview Lab

Preview with #66D6FF

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

Preview Lab → · Contrast checker → · Palette generator →