#66BEFB#66BEFB

#66BEFB is a light, vivid cyan. Relative luminance 0.466; OKLCH L 77.1% C 0.122 H 241.1°. Best body text is #000000 at 10.32:1 contrast (WCAG AA passes).

Color values

HEX	#66BEFB
RGB	rgb(102, 190, 251)
HSL	hsl(205, 95%, 69%)
HSV	hsv(205, 59%, 98%)
CMYK	cmyk(59.4%, 24.3%, 0%, 1.6%)
CIE-LAB	lab(73.94, -8.97, -38.08)
CIE-LCH	lch(73.94, 39.12, 256.74°)
OKLab	oklab(77.11% -0.0591 -0.1068)
OKLCH	oklch(77.11% 0.122 241.1)
XYZ	xyz(41.2990, 46.6128, 98.0688)
Luminance	0.4662 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEFB #FBA366

analogous

#66FBEE #66BEFB #6674FB

triadic

#66BEFB #FB66BE #BEFB66

tetradic

#66BEFB #EE66FB #FBA366 #74FB66

square

#66BEFB #EE66FB #FBA366 #74FB66

split-complementary

#66BEFB #FB6674 #FBEE66

monochromatic

#0687E1 #2AA5F9 #66BEFB #A2D7FD #DDF1FE

Accessibility & contrast

On white

2.03

#66BEFB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.32

#66BEFB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEFB

10.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEFB	#FFFFFF	#000000	##000000
##66BEFB	1.00	2.03	10.32	10.32
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.32	21.00	1.00	1.00
##000000	10.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3BEFE

Deuteranopia (green-blind)

#8EAFFA

Tritanopia (blue-blind)

#00CDD3

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66befb;
/* rgb */ color: rgb(102, 190, 251);
/* oklch */ color: oklch(77.1% 0.122 241.1);

Tailwind

colors: {
  custom: {
    50: '#9dd1fd',
    500: '#66befb',
    950: '#000000',
  },
}

SCSS

$custom: #66befb;
$custom-light: #9dd1fd;
$custom-dark: #000000;

JSON

{
  "hex": "#66befb",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 251
  },
  "hsl": {
    "h": 204.564,
    "s": 94.904,
    "l": 69.216
  },
  "oklch": {
    "l": 0.77114,
    "c": 0.12207,
    "h": 241.1
  },
  "luminance": 0.46617
}

Semantic roles & 50–950 ramp

primary

#66BEFB

secondary

#F4DAC9

accent

#5E00E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BEFB

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

Preview Lab → · Contrast checker → · Palette generator →