#66AAF4#66AAF4

#66AAF4 is a light, vivid cyan. Relative luminance 0.381; OKLCH L 72.4% C 0.129 H 251.8°. Best body text is #000000 at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#66AAF4
RGB	rgb(102, 170, 244)
HSL	hsl(211, 87%, 68%)
HSV	hsv(211, 58%, 96%)
CMYK	cmyk(58.2%, 30.3%, 0%, 4.3%)
CIE-LAB	lab(68.10, -0.13, -43.41)
CIE-LCH	lch(68.10, 43.41, 269.83°)
OKLab	oklab(72.41% -0.0401 -0.1224)
OKLCH	oklch(72.41% 0.129 251.8)
XYZ	xyz(36.1775, 38.1027, 91.0185)
Luminance	0.3811 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AAF4 #F4B066

analogous

#66F1F4 #66AAF4 #6966F4

triadic

#66AAF4 #F466AA #AAF466

tetradic

#66AAF4 #F466F1 #F4B066 #66F469

square

#66AAF4 #F466F1 #F4B066 #66F469

split-complementary

#66AAF4 #F46966 #F1F466

monochromatic

#0F6CD1 #2D8AF0 #66AAF4 #9FCAF8 #D8E9FC

Accessibility & contrast

On white

2.44

#66AAF4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.62

#66AAF4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AAF4

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AAF4	#FFFFFF	#000000	##000000
##66AAF4	1.00	2.44	8.62	8.62
#FFFFFF	2.44	1.00	21.00	21.00
#000000	8.62	21.00	1.00	1.00
##000000	8.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8BAEF7

Deuteranopia (green-blind)

#78A0F3

Tritanopia (blue-blind)

#00BBC4

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aaf4;
/* rgb */ color: rgb(102, 170, 244);
/* oklch */ color: oklch(72.4% 0.129 251.8);

Tailwind

colors: {
  custom: {
    50: '#9cc3f8',
    500: '#66aaf4',
    950: '#000000',
  },
}

SCSS

$custom: #66aaf4;
$custom-light: #9cc3f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66aaf4",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 244
  },
  "hsl": {
    "h": 211.268,
    "s": 86.585,
    "l": 67.843
  },
  "oklch": {
    "l": 0.7241,
    "c": 0.12879,
    "h": 251.8
  },
  "luminance": 0.38106
}

Semantic roles & 50–950 ramp

primary

#66AAF4

secondary

#F1DCC5

accent

#7702E3

background

#FAFBFF

surface

#F4F7FF

border

#CED0D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AAF4

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

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