#66B8FB#66B8FB

#66B8FB is a light, vivid cyan. Relative luminance 0.441; OKLCH L 75.8% C 0.126 H 245.2°. Best body text is #000000 at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#66B8FB
RGB	rgb(102, 184, 251)
HSL	hsl(207, 95%, 69%)
HSV	hsv(207, 59%, 98%)
CMYK	cmyk(59.4%, 26.7%, 0%, 1.6%)
CIE-LAB	lab(72.27, -5.71, -40.67)
CIE-LCH	lch(72.27, 41.07, 262.00°)
OKLab	oklab(75.8% -0.0528 -0.1143)
OKLCH	oklch(75.8% 0.126 245.2)
XYZ	xyz(40.0261, 44.0671, 97.6445)
Luminance	0.4407 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B8FB #FBA966

analogous

#66FBF4 #66B8FB #666EFB

triadic

#66B8FB #FB66B8 #B8FB66

tetradic

#66B8FB #F466FB #FBA966 #6EFB66

square

#66B8FB #F466FB #FBA966 #6EFB66

split-complementary

#66B8FB #FB666E #FBF466

monochromatic

#067EE1 #2A9CF9 #66B8FB #A2D4FD #DDEFFE

Accessibility & contrast

On white

2.14

#66B8FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.81

#66B8FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B8FB

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B8FB	#FFFFFF	#000000	##000000
##66B8FB	1.00	2.14	9.81	9.81
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.81	21.00	1.00	1.00
##000000	9.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB9FE

Deuteranopia (green-blind)

#87ABFA

Tritanopia (blue-blind)

#00C8CF

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66b8fb;
/* rgb */ color: rgb(102, 184, 251);
/* oklch */ color: oklch(75.8% 0.126 245.2);

Tailwind

colors: {
  custom: {
    50: '#9dcdfd',
    500: '#66b8fb',
    950: '#000000',
  },
}

SCSS

$custom: #66b8fb;
$custom-light: #9dcdfd;
$custom-dark: #000000;

JSON

{
  "hex": "#66b8fb",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 251
  },
  "hsl": {
    "h": 206.98,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.75796,
    "c": 0.12596,
    "h": 245.2
  },
  "luminance": 0.44071
}

Semantic roles & 50–950 ramp

primary

#66B8FB

secondary

#F4DCC9

accent

#6700E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B8FB

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

Preview Lab → · Contrast checker → · Palette generator →