#66A8F9#66A8F9

#66A8F9 is a light, vivid cyan. Relative luminance 0.377; OKLCH L 72.2% C 0.137 H 254.4°. Best body text is #000000 at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#66A8F9
RGB	rgb(102, 168, 249)
HSL	hsl(213, 92%, 69%)
HSV	hsv(213, 59%, 98%)
CMYK	cmyk(59%, 32.5%, 0%, 2.4%)
CIE-LAB	lab(67.77, 2.58, -46.64)
CIE-LCH	lch(67.77, 46.71, 273.17°)
OKLab	oklab(72.23% -0.0367 -0.1318)
OKLCH	oklch(72.23% 0.137 254.4)
XYZ	xyz(36.5749, 37.6663, 94.9470)
Luminance	0.3767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A8F9 #F9B766

analogous

#66F2F9 #66A8F9 #6E66F9

triadic

#66A8F9 #F966A8 #A8F966

tetradic

#66A8F9 #F966F2 #F9B766 #66F96E

square

#66A8F9 #F966F2 #F9B766 #66F96E

split-complementary

#66A8F9 #F96E66 #F2F966

monochromatic

#0968DC #2B87F7 #66A8F9 #A1C9FB #DCEBFE

Accessibility & contrast

On white

2.46

#66A8F9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.53

#66A8F9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A8F9

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A8F9	#FFFFFF	#000000	##000000
##66A8F9	1.00	2.46	8.53	8.53
#FFFFFF	2.46	1.00	21.00	21.00
#000000	8.53	21.00	1.00	1.00
##000000	8.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#86ADFC

Deuteranopia (green-blind)

#739FF7

Tritanopia (blue-blind)

#00BAC5

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66a8f9;
/* rgb */ color: rgb(102, 168, 249);
/* oklch */ color: oklch(72.2% 0.137 254.4);

Tailwind

colors: {
  custom: {
    50: '#9cc1fb',
    500: '#66a8f9',
    950: '#000000',
  },
}

SCSS

$custom: #66a8f9;
$custom-light: #9cc1fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66a8f9",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 249
  },
  "hsl": {
    "h": 213.061,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.72232,
    "c": 0.13679,
    "h": 254.4
  },
  "luminance": 0.3767
}

Semantic roles & 50–950 ramp

primary

#66A8F9

secondary

#F3E0C8

accent

#7E00E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A8F9

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

Preview Lab → · Contrast checker → · Palette generator →