#66AAF9#66AAF9

#66AAF9 is a light, vivid cyan. Relative luminance 0.384; OKLCH L 72.7% C 0.135 H 253.3°. Best body text is #000000 at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#66AAF9
RGB	rgb(102, 170, 249)
HSL	hsl(212, 92%, 69%)
HSV	hsv(212, 59%, 98%)
CMYK	cmyk(59%, 31.7%, 0%, 2.4%)
CIE-LAB	lab(68.32, 1.45, -45.78)
CIE-LCH	lch(68.32, 45.80, 271.82°)
OKLab	oklab(72.66% -0.0388 -0.1292)
OKLCH	oklch(72.66% 0.135 253.3)
XYZ	xyz(36.9470, 38.4105, 95.0711)
Luminance	0.3841 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAF9 #F9B566

analogous

#66F4F9 #66AAF9 #6C66F9

triadic

#66AAF9 #F966AA #AAF966

tetradic

#66AAF9 #F966F4 #F9B566 #66F96C

square

#66AAF9 #F966F4 #F9B566 #66F96C

split-complementary

#66AAF9 #F96C66 #F4F966

monochromatic

#096ADC #2B89F7 #66AAF9 #A1CBFB #DCEBFE

Accessibility & contrast

On white

2.42

#66AAF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.68

#66AAF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF9

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAF9	#FFFFFF	#000000	##000000
##66AAF9	1.00	2.42	8.68	8.68
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.68	21.00	1.00	1.00
##000000	8.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#89AEFC

Deuteranopia (green-blind)

#75A0F7

Tritanopia (blue-blind)

#00BCC6

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66aaf9;
/* rgb */ color: rgb(102, 170, 249);
/* oklch */ color: oklch(72.7% 0.135 253.3);

Tailwind

colors: {
  custom: {
    50: '#9cc3fb',
    500: '#66aaf9',
    950: '#000000',
  },
}

SCSS

$custom: #66aaf9;
$custom-light: #9cc3fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66aaf9",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 249
  },
  "hsl": {
    "h": 212.245,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.72661,
    "c": 0.13494,
    "h": 253.3
  },
  "luminance": 0.38414
}

Semantic roles & 50–950 ramp

primary

#66AAF9

secondary

#F3DFC8

accent

#7B00E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAF9

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

Preview Lab → · Contrast checker → · Palette generator →