#66BBFB#66BBFB

#66BBFB is a light, vivid cyan. Relative luminance 0.453; OKLCH L 76.5% C 0.124 H 243.2°. Best body text is #000000 at 10.07:1 contrast (WCAG AA passes).

Color values

HEX	#66BBFB
RGB	rgb(102, 187, 251)
HSL	hsl(206, 95%, 69%)
HSV	hsv(206, 59%, 98%)
CMYK	cmyk(59.4%, 25.5%, 0%, 1.6%)
CIE-LAB	lab(73.11, -7.35, -39.37)
CIE-LCH	lch(73.11, 40.05, 259.43°)
OKLab	oklab(76.45% -0.0559 -0.1106)
OKLCH	oklch(76.45% 0.124 243.2)
XYZ	xyz(40.6559, 45.3266, 97.8545)
Luminance	0.4533 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBFB #FBA666

analogous

#66FBF1 #66BBFB #6671FB

triadic

#66BBFB #FB66BB #BBFB66

tetradic

#66BBFB #F166FB #FBA666 #71FB66

square

#66BBFB #F166FB #FBA666 #71FB66

split-complementary

#66BBFB #FB6671 #FBF166

monochromatic

#0683E1 #2AA0F9 #66BBFB #A2D6FD #DDF0FE

Accessibility & contrast

On white

2.09

#66BBFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.07

#66BBFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBFB

10.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBFB	#FFFFFF	#000000	##000000
##66BBFB	1.00	2.09	10.07	10.07
#FFFFFF	2.09	1.00	21.00	21.00
#000000	10.07	21.00	1.00	1.00
##000000	10.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FBCFE

Deuteranopia (green-blind)

#8BADFA

Tritanopia (blue-blind)

#00CBD1

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bbfb;
/* rgb */ color: rgb(102, 187, 251);
/* oklch */ color: oklch(76.5% 0.124 243.2);

Tailwind

colors: {
  custom: {
    50: '#9dcffd',
    500: '#66bbfb',
    950: '#000000',
  },
}

SCSS

$custom: #66bbfb;
$custom-light: #9dcffd;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbfb",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 251
  },
  "hsl": {
    "h": 205.772,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.76454,
    "c": 0.12393,
    "h": 243.2
  },
  "luminance": 0.4533
}

Semantic roles & 50–950 ramp

primary

#66BBFB

secondary

#F4DBC9

accent

#6300E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBFB

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

Preview Lab → · Contrast checker → · Palette generator →