#66BBF5#66BBF5

#66BBF5 is a light, moderate cyan. Relative luminance 0.450; OKLCH L 76.2% C 0.118 H 240.5°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#66BBF5
RGB	rgb(102, 187, 245)
HSL	hsl(204, 88%, 68%)
HSV	hsv(204, 58%, 96%)
CMYK	cmyk(58.4%, 23.7%, 0%, 3.9%)
CIE-LAB	lab(72.86, -9.19, -36.52)
CIE-LCH	lch(72.86, 37.66, 255.87°)
OKLab	oklab(76.18% -0.0578 -0.1023)
OKLCH	oklch(76.18% 0.118 240.5)
XYZ	xyz(39.7251, 44.9543, 92.9521)
Luminance	0.4496 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBF5 #F5A066

analogous

#66F5E8 #66BBF5 #6673F5

triadic

#66BBF5 #F566BB #BBF566

tetradic

#66BBF5 #E866F5 #F5A066 #73F566

square

#66BBF5 #E866F5 #F5A066 #73F566

split-complementary

#66BBF5 #F56673 #F5E866

monochromatic

#0E83D3 #2DA1F1 #66BBF5 #9FD5F9 #D9EEFD

Accessibility & contrast

On white

2.10

#66BBF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.99

#66BBF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBF5

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBF5	#FFFFFF	#000000	##000000
##66BBF5	1.00	2.10	9.99	9.99
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.99	21.00	1.00	1.00
##000000	9.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1BBF8

Deuteranopia (green-blind)

#8DACF4

Tritanopia (blue-blind)

#00C9CF

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bbf5;
/* rgb */ color: rgb(102, 187, 245);
/* oklch */ color: oklch(76.2% 0.118 240.5);

Tailwind

colors: {
  custom: {
    50: '#9ccff8',
    500: '#66bbf5',
    950: '#000000',
  },
}

SCSS

$custom: #66bbf5;
$custom-light: #9ccff8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbf5",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 245
  },
  "hsl": {
    "h": 204.336,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.7618,
    "c": 0.11757,
    "h": 240.5
  },
  "luminance": 0.44958
}

Semantic roles & 50–950 ramp

primary

#66BBF5

secondary

#F1D7C6

accent

#5D01E4

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBF5

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

Preview Lab → · Contrast checker → · Palette generator →