#66BBF4#66BBF4

#66BBF4 is a light, moderate cyan. Relative luminance 0.449; OKLCH L 76.1% C 0.117 H 240.0°. Best body text is #000000 at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#66BBF4
RGB	rgb(102, 187, 244)
HSL	hsl(204, 87%, 68%)
HSV	hsv(204, 58%, 96%)
CMYK	cmyk(58.2%, 23.4%, 0%, 4.3%)
CIE-LAB	lab(72.82, -9.50, -36.04)
CIE-LCH	lch(72.82, 37.27, 255.24°)
OKLab	oklab(76.13% -0.0582 -0.101)
OKLCH	oklch(76.13% 0.117 240)
XYZ	xyz(39.5729, 44.8934, 92.1503)
Luminance	0.4490 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBF4 #F49F66

analogous

#66F4E6 #66BBF4 #6674F4

triadic

#66BBF4 #F466BB #BBF466

tetradic

#66BBF4 #E666F4 #F49F66 #74F466

square

#66BBF4 #E666F4 #F49F66 #74F466

split-complementary

#66BBF4 #F46674 #F4E666

monochromatic

#0F83D1 #2DA2F0 #66BBF4 #9FD4F8 #D8EEFC

Accessibility & contrast

On white

2.10

#66BBF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.98

#66BBF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBF4

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBF4	#FFFFFF	#000000	##000000
##66BBF4	1.00	2.10	9.98	9.98
#FFFFFF	2.10	1.00	21.00	21.00
#000000	9.98	21.00	1.00	1.00
##000000	9.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A1BBF7

Deuteranopia (green-blind)

#8EACF3

Tritanopia (blue-blind)

#00C9CE

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bbf4;
/* rgb */ color: rgb(102, 187, 244);
/* oklch */ color: oklch(76.1% 0.117 240.0);

Tailwind

colors: {
  custom: {
    50: '#9ccff8',
    500: '#66bbf4',
    950: '#000000',
  },
}

SCSS

$custom: #66bbf4;
$custom-light: #9ccff8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbf4",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 244
  },
  "hsl": {
    "h": 204.085,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.76135,
    "c": 0.11653,
    "h": 240
  },
  "luminance": 0.44897
}

Semantic roles & 50–950 ramp

primary

#66BBF4

secondary

#F1D7C5

accent

#5D02E3

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66BBF4

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

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