#66E3FE#66E3FE

#66E3FE is a very light, moderate cyan. Relative luminance 0.649; OKLCH L 85.5% C 0.116 H 214.2°. Best body text is #000000 at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#66E3FE
RGB	rgb(102, 227, 254)
HSL	hsl(191, 99%, 70%)
HSV	hsv(191, 60%, 100%)
CMYK	cmyk(59.8%, 10.6%, 0%, 0.4%)
CIE-LAB	lab(84.44, -27.08, -23.54)
CIE-LCH	lch(84.44, 35.88, 221.00°)
OKLab	oklab(85.52% -0.0962 -0.0653)
OKLCH	oklch(85.52% 0.116 214.2)
XYZ	xyz(50.8307, 64.9135, 103.5975)
Luminance	0.6492 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E3FE #FE8166

analogous

#66FECD #66E3FE #6697FE

triadic

#66E3FE #FE66E3 #E3FE66

tetradic

#66E3FE #CD66FE #FE8166 #97FE66

square

#66E3FE #CD66FE #FE8166 #97FE66

split-complementary

#66E3FE #FE6697 #FECD66

monochromatic

#02BFE8 #29D8FE #66E3FE #A3EEFE #E0F9FF

Accessibility & contrast

On white

1.50

#66E3FE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.98

#66E3FE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E3FE

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E3FE	#FFFFFF	#000000	##000000
##66E3FE	1.00	1.50	13.98	13.98
#FFFFFF	1.50	1.00	21.00	21.00
#000000	13.98	21.00	1.00	1.00
##000000	13.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFDCFF

Deuteranopia (green-blind)

#B9CCFE

Tritanopia (blue-blind)

#00EDEB

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66e3fe;
/* rgb */ color: rgb(102, 227, 254);
/* oklch */ color: oklch(85.5% 0.116 214.2);

Tailwind

colors: {
  custom: {
    50: '#9fecfe',
    500: '#66e3fe',
    950: '#000000',
  },
}

SCSS

$custom: #66e3fe;
$custom-light: #9fecfe;
$custom-dark: #000000;

JSON

{
  "hex": "#66e3fe",
  "rgb": {
    "r": 102,
    "g": 227,
    "b": 254
  },
  "hsl": {
    "h": 190.658,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.85522,
    "c": 0.11631,
    "h": 214.2
  },
  "luminance": 0.64919
}

Semantic roles & 50–950 ramp

primary

#66E3FE

secondary

#D94D2F

accent

#2900E6

background

#FDFEFF

surface

#F7FDFF

border

#D0D5D7

text

#101617

muted

#818485

Preview Lab

Preview with #66E3FE

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

Preview Lab → · Contrast checker → · Palette generator →