#66D4F8#66D4F8

#66D4F8 is a light, moderate cyan. Relative luminance 0.567; OKLCH L 81.9% C 0.112 H 222.3°. Best body text is #000000 at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#66D4F8
RGB	rgb(102, 212, 248)
HSL	hsl(195, 91%, 69%)
HSV	hsv(195, 59%, 97%)
CMYK	cmyk(58.9%, 14.5%, 0%, 2.7%)
CIE-LAB	lab(80.00, -21.35, -27.13)
CIE-LCH	lch(80.00, 34.52, 231.79°)
OKLab	oklab(81.9% -0.083 -0.0755)
OKLCH	oklch(81.9% 0.112 222.3)
XYZ	xyz(45.9596, 56.6845, 97.3079)
Luminance	0.5669 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D4F8 #F88A66

analogous

#66F8D3 #66D4F8 #668BF8

triadic

#66D4F8 #F866D4 #D4F866

tetradic

#66D4F8 #D366F8 #F88A66 #8BF866

square

#66D4F8 #D366F8 #F88A66 #8BF866

split-complementary

#66D4F8 #F8668B #F8D366

monochromatic

#0AA6DA #2BC4F5 #66D4F8 #A1E4FB #DBF5FD

Accessibility & contrast

On white

1.70

#66D4F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.34

#66D4F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D4F8

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D4F8	#FFFFFF	#000000	##000000
##66D4F8	1.00	1.70	12.34	12.34
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.34	21.00	1.00	1.00
##000000	12.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFCFFA

Deuteranopia (green-blind)

#AAC0F8

Tritanopia (blue-blind)

#00DFDF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66d4f8;
/* rgb */ color: rgb(102, 212, 248);
/* oklch */ color: oklch(81.9% 0.112 222.3);

Tailwind

colors: {
  custom: {
    50: '#9ee1fa',
    500: '#66d4f8',
    950: '#000000',
  },
}

SCSS

$custom: #66d4f8;
$custom-light: #9ee1fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66d4f8",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 248
  },
  "hsl": {
    "h": 194.795,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.81899,
    "c": 0.1122,
    "h": 222.3
  },
  "luminance": 0.56689
}

Semantic roles & 50–950 ramp

primary

#66D4F8

secondary

#D25831

accent

#3900E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D4F8

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

Preview Lab → · Contrast checker → · Palette generator →