#66DEF6#66DEF6

#66DEF6 is a very light, moderate cyan. Relative luminance 0.617; OKLCH L 84.1% C 0.112 H 212.8°. Best body text is #000000 at 13.34:1 contrast (WCAG AA passes).

Color values

HEX	#66DEF6
RGB	rgb(102, 222, 246)
HSL	hsl(190, 89%, 68%)
HSV	hsv(190, 59%, 96%)
CMYK	cmyk(58.5%, 9.8%, 0%, 3.5%)
CIE-LAB	lab(82.76, -26.90, -21.86)
CIE-LCH	lch(82.76, 34.66, 219.10°)
OKLab	oklab(84.09% -0.0942 -0.0606)
OKLCH	oklch(84.09% 0.112 212.8)
XYZ	xyz(48.2286, 61.7163, 96.5417)
Luminance	0.6172 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DEF6 #F67E66

analogous

#66F6C6 #66DEF6 #6696F6

triadic

#66DEF6 #F666DE #DEF666

tetradic

#66DEF6 #C666F6 #F67E66 #96F666

square

#66DEF6 #C666F6 #F67E66 #96F666

split-complementary

#66DEF6 #F66696 #F6C666

monochromatic

#0DB4D5 #2CD2F3 #66DEF6 #A0EAF9 #DAF7FD

Accessibility & contrast

On white

1.57

#66DEF6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.34

#66DEF6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DEF6

13.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DEF6	#FFFFFF	#000000	##000000
##66DEF6	1.00	1.57	13.34	13.34
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.34	21.00	1.00	1.00
##000000	13.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBD7F7

Deuteranopia (green-blind)

#B6C7F6

Tritanopia (blue-blind)

#00E8E5

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #66def6;
/* rgb */ color: rgb(102, 222, 246);
/* oklch */ color: oklch(84.1% 0.112 212.8);

Tailwind

colors: {
  custom: {
    50: '#9ee8f9',
    500: '#66def6',
    950: '#000000',
  },
}

SCSS

$custom: #66def6;
$custom-light: #9ee8f9;
$custom-dark: #000000;

JSON

{
  "hex": "#66def6",
  "rgb": {
    "r": 102,
    "g": 222,
    "b": 246
  },
  "hsl": {
    "h": 190,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.84088,
    "c": 0.11198,
    "h": 212.8
  },
  "luminance": 0.61721
}

Semantic roles & 50–950 ramp

primary

#66DEF6

secondary

#CF4B31

accent

#2600E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DEF6

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

Preview Lab → · Contrast checker → · Palette generator →