#66D5F8#66D5F8

#66D5F8 is a very light, moderate cyan. Relative luminance 0.572; OKLCH L 82.1% C 0.112 H 221.4°. Best body text is #000000 at 12.44:1 contrast (WCAG AA passes).

Color values

HEX	#66D5F8
RGB	rgb(102, 213, 248)
HSL	hsl(194, 91%, 69%)
HSV	hsv(194, 59%, 97%)
CMYK	cmyk(58.9%, 14.1%, 0%, 2.7%)
CIE-LAB	lab(80.28, -21.86, -26.69)
CIE-LCH	lch(80.28, 34.50, 230.69°)
OKLab	oklab(82.13% -0.0841 -0.0742)
OKLCH	oklch(82.13% 0.112 221.4)
XYZ	xyz(46.2103, 57.1860, 97.3915)
Luminance	0.5719 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D5F8 #F88966

analogous

#66F8D2 #66D5F8 #668CF8

triadic

#66D5F8 #F866D5 #D5F866

tetradic

#66D5F8 #D266F8 #F88966 #8CF866

square

#66D5F8 #D266F8 #F88966 #8CF866

split-complementary

#66D5F8 #F8668C #F8D266

monochromatic

#0AA8DA #2BC5F5 #66D5F8 #A1E5FB #DBF5FD

Accessibility & contrast

On white

1.69

#66D5F8 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.44

#66D5F8 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D5F8

12.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D5F8	#FFFFFF	#000000	##000000
##66D5F8	1.00	1.69	12.44	12.44
#FFFFFF	1.69	1.00	21.00	21.00
#000000	12.44	21.00	1.00	1.00
##000000	12.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0D0FA

Deuteranopia (green-blind)

#ABC0F8

Tritanopia (blue-blind)

#00E0E0

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #66d5f8;
/* rgb */ color: rgb(102, 213, 248);
/* oklch */ color: oklch(82.1% 0.112 221.4);

Tailwind

colors: {
  custom: {
    50: '#9ee2fa',
    500: '#66d5f8',
    950: '#000000',
  },
}

SCSS

$custom: #66d5f8;
$custom-light: #9ee2fa;
$custom-dark: #000000;

JSON

{
  "hex": "#66d5f8",
  "rgb": {
    "r": 102,
    "g": 213,
    "b": 248
  },
  "hsl": {
    "h": 194.384,
    "s": 91.25,
    "l": 68.627
  },
  "oklch": {
    "l": 0.82125,
    "c": 0.11215,
    "h": 221.4
  },
  "luminance": 0.57191
}

Semantic roles & 50–950 ramp

primary

#66D5F8

secondary

#D25731

accent

#3700E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D5F8

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

Preview Lab → · Contrast checker → · Palette generator →