#66D3FE#66D3FE

#66D3FE is a light, moderate cyan. Relative luminance 0.566; OKLCH L 81.9% C 0.116 H 226.7°. Best body text is #000000 at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#66D3FE
RGB	rgb(102, 211, 254)
HSL	hsl(197, 99%, 70%)
HSV	hsv(197, 60%, 100%)
CMYK	cmyk(59.8%, 16.9%, 0%, 0.4%)
CIE-LAB	lab(79.93, -19.09, -30.42)
CIE-LCH	lch(79.93, 35.91, 237.89°)
OKLab	oklab(81.92% -0.0798 -0.0848)
OKLCH	oklch(81.92% 0.116 226.7)
XYZ	xyz(46.6561, 56.5644, 102.2060)
Luminance	0.5657 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D3FE #FE9166

analogous

#66FEDD #66D3FE #6687FE

triadic

#66D3FE #FE66D3 #D3FE66

tetradic

#66D3FE #DD66FE #FE9166 #87FE66

square

#66D3FE #DD66FE #FE9166 #87FE66

split-complementary

#66D3FE #FE6687 #FEDD66

monochromatic

#02A7E8 #29C2FE #66D3FE #A3E4FE #E0F6FF

Accessibility & contrast

On white

1.71

#66D3FE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.31

#66D3FE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D3FE

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D3FE	#FFFFFF	#000000	##000000
##66D3FE	1.00	1.71	12.31	12.31
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.31	21.00	1.00	1.00
##000000	12.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCCFFF

Deuteranopia (green-blind)

#A6BFFD

Tritanopia (blue-blind)

#00E0E1

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66d3fe;
/* rgb */ color: rgb(102, 211, 254);
/* oklch */ color: oklch(81.9% 0.116 226.7);

Tailwind

colors: {
  custom: {
    50: '#9ee0ff',
    500: '#66d3fe',
    950: '#000000',
  },
}

SCSS

$custom: #66d3fe;
$custom-light: #9ee0ff;
$custom-dark: #000000;

JSON

{
  "hex": "#66d3fe",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 254
  },
  "hsl": {
    "h": 196.974,
    "s": 98.701,
    "l": 69.804
  },
  "oklch": {
    "l": 0.81916,
    "c": 0.11648,
    "h": 226.7
  },
  "luminance": 0.56569
}

Semantic roles & 50–950 ramp

primary

#66D3FE

secondary

#D95F2F

accent

#4100E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101518

muted

#808486

Preview Lab

Preview with #66D3FE

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

Preview Lab → · Contrast checker → · Palette generator →