#66B7FB#66B7FB

#66B7FB is a light, vivid cyan. Relative luminance 0.437; OKLCH L 75.6% C 0.127 H 245.9°. Best body text is #000000 at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#66B7FB
RGB	rgb(102, 183, 251)
HSL	hsl(207, 95%, 69%)
HSV	hsv(207, 59%, 98%)
CMYK	cmyk(59.4%, 27.1%, 0%, 1.6%)
CIE-LAB	lab(72.00, -5.16, -41.10)
CIE-LCH	lch(72.00, 41.43, 262.84°)
OKLab	oklab(75.58% -0.0518 -0.1156)
OKLCH	oklch(75.58% 0.127 245.9)
XYZ	xyz(39.8192, 43.6531, 97.5755)
Luminance	0.4366 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B7FB #FBAA66

analogous

#66FBF5 #66B7FB #666DFB

triadic

#66B7FB #FB66B7 #B7FB66

tetradic

#66B7FB #F566FB #FBAA66 #6DFB66

square

#66B7FB #F566FB #FBAA66 #6DFB66

split-complementary

#66B7FB #FB666D #FBF566

monochromatic

#067DE1 #2A9BF9 #66B7FB #A2D3FD #DDEFFE

Accessibility & contrast

On white

2.16

#66B7FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.73

#66B7FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B7FB

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B7FB	#FFFFFF	#000000	##000000
##66B7FB	1.00	2.16	9.73	9.73
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.73	21.00	1.00	1.00
##000000	9.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB9FE

Deuteranopia (green-blind)

#85AAFA

Tritanopia (blue-blind)

#00C7CF

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66b7fb;
/* rgb */ color: rgb(102, 183, 251);
/* oklch */ color: oklch(75.6% 0.127 245.9);

Tailwind

colors: {
  custom: {
    50: '#9dccfd',
    500: '#66b7fb',
    950: '#000000',
  },
}

SCSS

$custom: #66b7fb;
$custom-light: #9dccfd;
$custom-dark: #000000;

JSON

{
  "hex": "#66b7fb",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 251
  },
  "hsl": {
    "h": 207.383,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.75578,
    "c": 0.12668,
    "h": 245.9
  },
  "luminance": 0.43657
}

Semantic roles & 50–950 ramp

primary

#66B7FB

secondary

#F4DDC9

accent

#6900E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B7FB

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

Preview Lab → · Contrast checker → · Palette generator →