#66A8FB#66A8FB

#66A8FB is a light, vivid cyan. Relative luminance 0.378; OKLCH L 72.3% C 0.139 H 254.9°. Best body text is #000000 at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#66A8FB
RGB	rgb(102, 168, 251)
HSL	hsl(213, 95%, 69%)
HSV	hsv(213, 59%, 98%)
CMYK	cmyk(59.4%, 33.1%, 0%, 1.6%)
CIE-LAB	lab(67.87, 3.22, -47.58)
CIE-LCH	lch(67.87, 47.69, 273.87°)
OKLab	oklab(72.34% -0.0362 -0.1345)
OKLCH	oklch(72.34% 0.139 254.9)
XYZ	xyz(36.8885, 37.7918, 96.5986)
Luminance	0.3780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A8FB #FBB966

analogous

#66F2FB #66A8FB #6F66FB

triadic

#66A8FB #FB66A8 #A8FB66

tetradic

#66A8FB #FB66F2 #FBB966 #66FB6F

square

#66A8FB #FB66F2 #FBB966 #66FB6F

split-complementary

#66A8FB #FB6F66 #F2FB66

monochromatic

#0667E1 #2A86F9 #66A8FB #A2CAFD #DDECFE

Accessibility & contrast

On white

2.45

#66A8FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.56

#66A8FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A8FB

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A8FB	#FFFFFF	#000000	##000000
##66A8FB	1.00	2.45	8.56	8.56
#FFFFFF	2.45	1.00	21.00	21.00
#000000	8.56	21.00	1.00	1.00
##000000	8.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#85ADFE

Deuteranopia (green-blind)

#719FF9

Tritanopia (blue-blind)

#00BBC6

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66a8fb;
/* rgb */ color: rgb(102, 168, 251);
/* oklch */ color: oklch(72.3% 0.139 254.9);

Tailwind

colors: {
  custom: {
    50: '#9dc1fd',
    500: '#66a8fb',
    950: '#000000',
  },
}

SCSS

$custom: #66a8fb;
$custom-light: #9dc1fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66a8fb",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 251
  },
  "hsl": {
    "h": 213.423,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.72335,
    "c": 0.1393,
    "h": 254.9
  },
  "luminance": 0.37795
}

Semantic roles & 50–950 ramp

primary

#66A8FB

secondary

#F4E1C9

accent

#8000E6

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66A8FB

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

Preview Lab → · Contrast checker → · Palette generator →