#66DEF8#66DEF8

#66DEF8 is a very light, moderate cyan. Relative luminance 0.618; OKLCH L 84.2% C 0.113 H 214.1°. Best body text is #000000 at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#66DEF8
RGB	rgb(102, 222, 248)
HSL	hsl(191, 91%, 69%)
HSV	hsv(191, 59%, 97%)
CMYK	cmyk(58.9%, 10.5%, 0%, 2.7%)
CIE-LAB	lab(82.83, -26.33, -22.82)
CIE-LCH	lch(82.83, 34.84, 220.91°)
OKLab	oklab(84.16% -0.0934 -0.0633)
OKLCH	oklch(84.16% 0.113 214.1)
XYZ	xyz(48.5372, 61.8398, 98.1671)
Luminance	0.6185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DEF8 #F88066

analogous

#66F8C9 #66DEF8 #6695F8

triadic

#66DEF8 #F866DE #DEF866

tetradic

#66DEF8 #C966F8 #F88066 #95F866

square

#66DEF8 #C966F8 #F88066 #95F866

split-complementary

#66DEF8 #F86695 #F8C966

monochromatic

#0AB5DA #2BD1F5 #66DEF8 #A1EBFB #DBF7FD

Accessibility & contrast

On white

1.57

#66DEF8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.37

#66DEF8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DEF8

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DEF8	#FFFFFF	#000000	##000000
##66DEF8	1.00	1.57	13.37	13.37
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.37	21.00	1.00	1.00
##000000	13.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBD7FA

Deuteranopia (green-blind)

#B5C7F8

Tritanopia (blue-blind)

#00E8E6

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #66def8;
/* rgb */ color: rgb(102, 222, 248);
/* oklch */ color: oklch(84.2% 0.113 214.1);

Tailwind

colors: {
  custom: {
    50: '#9ee8fa',
    500: '#66def8',
    950: '#000000',
  },
}

SCSS

$custom: #66def8;
$custom-light: #9ee8fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66def8",
  "rgb": {
    "r": 102,
    "g": 222,
    "b": 248
  },
  "hsl": {
    "h": 190.685,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.84163,
    "c": 0.11282,
    "h": 214.1
  },
  "luminance": 0.61845
}

Semantic roles & 50–950 ramp

primary

#66DEF8

secondary

#D24D31

accent

#2900E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DEF8

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

Preview Lab → · Contrast checker → · Palette generator →