#66AEF9#66AEF9

#66AEF9 is a light, vivid cyan. Relative luminance 0.399; OKLCH L 73.5% C 0.131 H 250.9°. Best body text is #000000 at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#66AEF9
RGB	rgb(102, 174, 249)
HSL	hsl(211, 92%, 69%)
HSV	hsv(211, 59%, 98%)
CMYK	cmyk(59%, 30.1%, 0%, 2.4%)
CIE-LAB	lab(69.42, -0.80, -44.05)
CIE-LCH	lch(69.42, 44.06, 268.96°)
OKLab	oklab(73.52% -0.043 -0.1242)
OKLCH	oklch(73.52% 0.131 250.9)
XYZ	xyz(37.7082, 39.9330, 95.3248)
Luminance	0.3994 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AEF9 #F9B166

analogous

#66F8F9 #66AEF9 #6866F9

triadic

#66AEF9 #F966AE #AEF966

tetradic

#66AEF9 #F966F8 #F9B166 #66F968

square

#66AEF9 #F966F8 #F9B166 #66F968

split-complementary

#66AEF9 #F96866 #F8F966

monochromatic

#0970DC #2B8FF7 #66AEF9 #A1CDFB #DCECFE

Accessibility & contrast

On white

2.34

#66AEF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.99

#66AEF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AEF9

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AEF9	#FFFFFF	#000000	##000000
##66AEF9	1.00	2.34	8.99	8.99
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.99	21.00	1.00	1.00
##000000	8.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8EB1FC

Deuteranopia (green-blind)

#7BA3F8

Tritanopia (blue-blind)

#00BFC9

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #66aef9;
/* rgb */ color: rgb(102, 174, 249);
/* oklch */ color: oklch(73.5% 0.131 250.9);

Tailwind

colors: {
  custom: {
    50: '#9dc5fb',
    500: '#66aef9',
    950: '#000000',
  },
}

SCSS

$custom: #66aef9;
$custom-light: #9dc5fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66aef9",
  "rgb": {
    "r": 102,
    "g": 174,
    "b": 249
  },
  "hsl": {
    "h": 210.612,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.73524,
    "c": 0.13142,
    "h": 250.9
  },
  "luminance": 0.39936
}

Semantic roles & 50–950 ramp

primary

#66AEF9

secondary

#F3DEC8

accent

#7500E6

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66AEF9

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

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