#66B8F7#66B8F7

#66B8F7 is a light, vivid cyan. Relative luminance 0.438; OKLCH L 75.6% C 0.122 H 243.6°. Best body text is #000000 at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#66B8F7
RGB	rgb(102, 184, 247)
HSL	hsl(206, 90%, 68%)
HSV	hsv(206, 59%, 97%)
CMYK	cmyk(58.7%, 25.5%, 0%, 3.1%)
CIE-LAB	lab(72.11, -6.95, -38.77)
CIE-LCH	lch(72.11, 39.39, 259.84°)
OKLab	oklab(75.61% -0.0541 -0.1089)
OKLCH	oklch(75.61% 0.122 243.6)
XYZ	xyz(39.4023, 43.8175, 94.3588)
Luminance	0.4382 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B8F7 #F7A566

analogous

#66F7ED #66B8F7 #666FF7

triadic

#66B8F7 #F766B8 #B8F766

tetradic

#66B8F7 #ED66F7 #F7A566 #6FF766

square

#66B8F7 #ED66F7 #F7A566 #6FF766

split-complementary

#66B8F7 #F7666F #F7ED66

monochromatic

#0B7FD7 #2C9DF4 #66B8F7 #A0D3FA #DAEEFD

Accessibility & contrast

On white

2.15

#66B8F7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.76

#66B8F7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B8F7

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B8F7	#FFFFFF	#000000	##000000
##66B8F7	1.00	2.15	9.76	9.76
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.76	21.00	1.00	1.00
##000000	9.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CB9FA

Deuteranopia (green-blind)

#89AAF6

Tritanopia (blue-blind)

#00C7CE

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66b8f7;
/* rgb */ color: rgb(102, 184, 247);
/* oklch */ color: oklch(75.6% 0.122 243.6);

Tailwind

colors: {
  custom: {
    50: '#9ccdfa',
    500: '#66b8f7',
    950: '#000000',
  },
}

SCSS

$custom: #66b8f7;
$custom-light: #9ccdfa;
$custom-dark: #000000;

JSON

{
  "hex": "#66b8f7",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 247
  },
  "hsl": {
    "h": 206.069,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.7561,
    "c": 0.12154,
    "h": 243.6
  },
  "luminance": 0.43821
}

Semantic roles & 50–950 ramp

primary

#66B8F7

secondary

#F2DAC7

accent

#6400E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B8F7

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

Preview Lab → · Contrast checker → · Palette generator →