#66BBF6#66BBF6

#66BBF6 is a light, moderate cyan. Relative luminance 0.450; OKLCH L 76.2% C 0.119 H 241.0°. Best body text is #000000 at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#66BBF6
RGB	rgb(102, 187, 246)
HSL	hsl(205, 89%, 68%)
HSV	hsv(205, 59%, 96%)
CMYK	cmyk(58.5%, 24%, 0%, 3.5%)
CIE-LAB	lab(72.90, -8.88, -36.99)
CIE-LCH	lch(72.90, 38.05, 256.50°)
OKLab	oklab(76.22% -0.0575 -0.1037)
OKLCH	oklch(76.22% 0.119 241)
XYZ	xyz(39.8782, 45.0155, 93.7582)
Luminance	0.4502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBF6 #F6A166

analogous

#66F6E9 #66BBF6 #6673F6

triadic

#66BBF6 #F666BB #BBF666

tetradic

#66BBF6 #E966F6 #F6A166 #73F666

square

#66BBF6 #E966F6 #F6A166 #73F666

split-complementary

#66BBF6 #F66673 #F6E966

monochromatic

#0D83D5 #2CA1F3 #66BBF6 #A0D5F9 #DAEEFD

Accessibility & contrast

On white

2.10

#66BBF6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.00

#66BBF6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBF6

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBF6	#FFFFFF	#000000	##000000
##66BBF6	1.00	2.10	10.00	10.00
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.00	21.00	1.00	1.00
##000000	10.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1BBF9

Deuteranopia (green-blind)

#8DACF5

Tritanopia (blue-blind)

#00CACF

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bbf6;
/* rgb */ color: rgb(102, 187, 246);
/* oklch */ color: oklch(76.2% 0.119 241.0);

Tailwind

colors: {
  custom: {
    50: '#9ccff9',
    500: '#66bbf6',
    950: '#000000',
  },
}

SCSS

$custom: #66bbf6;
$custom-light: #9ccff9;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbf6",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 246
  },
  "hsl": {
    "h": 204.583,
    "s": 88.889,
    "l": 68.235
  },
  "oklch": {
    "l": 0.76225,
    "c": 0.11861,
    "h": 241
  },
  "luminance": 0.45019
}

Semantic roles & 50–950 ramp

primary

#66BBF6

secondary

#F2D8C6

accent

#5E00E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBF6

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

Preview Lab → · Contrast checker → · Palette generator →