#66C8FB#66C8FB

#66C8FB is a light, moderate cyan. Relative luminance 0.511; OKLCH L 79.3% C 0.117 H 233.6°. Best body text is #000000 at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#66C8FB
RGB	rgb(102, 200, 251)
HSL	hsl(201, 95%, 69%)
HSV	hsv(201, 59%, 98%)
CMYK	cmyk(59.4%, 20.3%, 0%, 1.6%)
CIE-LAB	lab(76.74, -14.29, -33.75)
CIE-LCH	lch(76.74, 36.65, 247.05°)
OKLab	oklab(79.33% -0.0695 -0.0943)
OKLCH	oklch(79.33% 0.117 233.6)
XYZ	xyz(43.5397, 51.0942, 98.8157)
Luminance	0.5110 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8FB #FB9966

analogous

#66FBE4 #66C8FB #667EFB

triadic

#66C8FB #FB66C8 #C8FB66

tetradic

#66C8FB #E466FB #FB9966 #7EFB66

square

#66C8FB #E466FB #FB9966 #7EFB66

split-complementary

#66C8FB #FB667E #FBE466

monochromatic

#0696E1 #2AB3F9 #66C8FB #A2DDFD #DDF3FE

Accessibility & contrast

On white

1.87

#66C8FB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.22

#66C8FB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8FB

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8FB	#FFFFFF	#000000	##000000
##66C8FB	1.00	1.87	11.22	11.22
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.22	21.00	1.00	1.00
##000000	11.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFC6FD

Deuteranopia (green-blind)

#9BB7FA

Tritanopia (blue-blind)

#00D6D9

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66c8fb;
/* rgb */ color: rgb(102, 200, 251);
/* oklch */ color: oklch(79.3% 0.117 233.6);

Tailwind

colors: {
  custom: {
    50: '#9dd8fc',
    500: '#66c8fb',
    950: '#000000',
  },
}

SCSS

$custom: #66c8fb;
$custom-light: #9dd8fc;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8fb",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 251
  },
  "hsl": {
    "h": 200.537,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.79331,
    "c": 0.11718,
    "h": 233.6
  },
  "luminance": 0.51098
}

Semantic roles & 50–950 ramp

primary

#66C8FB

secondary

#D56930

accent

#4F00E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1417

muted

#808385

Preview Lab

Preview with #66C8FB

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

Preview Lab → · Contrast checker → · Palette generator →