#66DDFF#66DDFF

#66DDFF is a very light, moderate cyan. Relative luminance 0.618; OKLCH L 84.2% C 0.116 H 219.5°. Best body text is #000000 at 13.35:1 contrast (WCAG AA passes).

Color values

HEX	#66DDFF
RGB	rgb(102, 221, 255)
HSL	hsl(193, 100%, 70%)
HSV	hsv(193, 60%, 100%)
CMYK	cmyk(60%, 13.3%, 0%, 0%)
CIE-LAB	lab(82.78, -23.83, -26.59)
CIE-LCH	lch(82.78, 35.71, 228.13°)
OKLab	oklab(84.2% -0.0897 -0.0739)
OKLCH	oklch(84.2% 0.116 219.5)
XYZ	xyz(49.3787, 61.7527, 103.9055)
Luminance	0.6176 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DDFF #FF8866

analogous

#66FFD4 #66DDFF #6691FF

triadic

#66DDFF #FF66DD #DDFF66

tetradic

#66DDFF #D466FF #FF8866 #91FF66

square

#66DDFF #D466FF #FF8866 #91FF66

split-complementary

#66DDFF #FF6691 #FFD466

monochromatic

#00B6EB #29CFFF #66DDFF #A3EBFF #E0F8FF

Accessibility & contrast

On white

1.57

#66DDFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.35

#66DDFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DDFF

13.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DDFF	#FFFFFF	#000000	##000000
##66DDFF	1.00	1.57	13.35	13.35
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.35	21.00	1.00	1.00
##000000	13.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8D7FF

Deuteranopia (green-blind)

#B2C7FF

Tritanopia (blue-blind)

#00E8E8

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #66ddff;
/* rgb */ color: rgb(102, 221, 255);
/* oklch */ color: oklch(84.2% 0.116 219.5);

Tailwind

colors: {
  custom: {
    50: '#9fe7ff',
    500: '#66ddff',
    950: '#000000',
  },
}

SCSS

$custom: #66ddff;
$custom-light: #9fe7ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66ddff",
  "rgb": {
    "r": 102,
    "g": 221,
    "b": 255
  },
  "hsl": {
    "h": 193.333,
    "s": 100,
    "l": 70
  },
  "oklch": {
    "l": 0.84204,
    "c": 0.11627,
    "h": 219.5
  },
  "luminance": 0.61758
}

Semantic roles & 50–950 ramp

primary

#66DDFF

secondary

#DA552F

accent

#3300E6

background

#FDFEFF

surface

#F7FCFF

border

#D0D5D7

text

#101618

muted

#818486

Preview Lab

Preview with #66DDFF

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

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