#66D3F8#66D3F8

#66D3F8 is a light, moderate cyan. Relative luminance 0.562; OKLCH L 81.7% C 0.112 H 223.1°. Best body text is #000000 at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#66D3F8
RGB	rgb(102, 211, 248)
HSL	hsl(195, 91%, 69%)
HSV	hsv(195, 59%, 97%)
CMYK	cmyk(58.9%, 14.9%, 0%, 2.7%)
CIE-LAB	lab(79.72, -20.85, -27.56)
CIE-LCH	lch(79.72, 34.55, 232.89°)
OKLab	oklab(81.67% -0.082 -0.0767)
OKLCH	oklch(81.67% 0.112 223.1)
XYZ	xyz(45.7104, 56.1861, 97.2248)
Luminance	0.5619 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D3F8 #F88B66

analogous

#66F8D4 #66D3F8 #668AF8

triadic

#66D3F8 #F866D3 #D3F866

tetradic

#66D3F8 #D466F8 #F88B66 #8AF866

square

#66D3F8 #D466F8 #F88B66 #8AF866

split-complementary

#66D3F8 #F8668A #F8D466

monochromatic

#0AA5DA #2BC2F5 #66D3F8 #A1E4FB #DBF5FD

Accessibility & contrast

On white

1.72

#66D3F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.24

#66D3F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D3F8

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D3F8	#FFFFFF	#000000	##000000
##66D3F8	1.00	1.72	12.24	12.24
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.24	21.00	1.00	1.00
##000000	12.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BECEFA

Deuteranopia (green-blind)

#A9BFF8

Tritanopia (blue-blind)

#00DFDF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66d3f8;
/* rgb */ color: rgb(102, 211, 248);
/* oklch */ color: oklch(81.7% 0.112 223.1);

Tailwind

colors: {
  custom: {
    50: '#9ee0fa',
    500: '#66d3f8',
    950: '#000000',
  },
}

SCSS

$custom: #66d3f8;
$custom-light: #9ee0fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66d3f8",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 248
  },
  "hsl": {
    "h": 195.205,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.81673,
    "c": 0.11227,
    "h": 223.1
  },
  "luminance": 0.56191
}

Semantic roles & 50–950 ramp

primary

#66D3F8

secondary

#D25931

accent

#3A00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66D3F8

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

Preview Lab → · Contrast checker → · Palette generator →