#66BEF9#66BEF9

#66BEF9 is a light, vivid cyan. Relative luminance 0.465; OKLCH L 77.0% C 0.120 H 240.2°. Best body text is #000000 at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#66BEF9
RGB	rgb(102, 190, 249)
HSL	hsl(204, 92%, 69%)
HSV	hsv(204, 59%, 98%)
CMYK	cmyk(59%, 23.7%, 0%, 2.4%)
CIE-LAB	lab(73.86, -9.58, -37.12)
CIE-LCH	lch(73.86, 38.34, 255.52°)
OKLab	oklab(77.02% -0.0597 -0.1041)
OKLCH	oklch(77.02% 0.12 240.2)
XYZ	xyz(40.9854, 46.4874, 96.4172)
Luminance	0.4649 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BEF9 #F9A166

analogous

#66F9EB #66BEF9 #6675F9

triadic

#66BEF9 #F966BE #BEF966

tetradic

#66BEF9 #EB66F9 #F9A166 #75F966

square

#66BEF9 #EB66F9 #F9A166 #75F966

split-complementary

#66BEF9 #F96675 #F9EB66

monochromatic

#0987DC #2BA5F7 #66BEF9 #A1D7FB #DCF0FE

Accessibility & contrast

On white

2.04

#66BEF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.30

#66BEF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BEF9

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BEF9	#FFFFFF	#000000	##000000
##66BEF9	1.00	2.04	10.30	10.30
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.30	21.00	1.00	1.00
##000000	10.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A3BEFC

Deuteranopia (green-blind)

#8FAFF8

Tritanopia (blue-blind)

#00CDD2

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66bef9;
/* rgb */ color: rgb(102, 190, 249);
/* oklch */ color: oklch(77.0% 0.120 240.2);

Tailwind

colors: {
  custom: {
    50: '#9dd1fb',
    500: '#66bef9',
    950: '#000000',
  },
}

SCSS

$custom: #66bef9;
$custom-light: #9dd1fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66bef9",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 249
  },
  "hsl": {
    "h": 204.082,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.77024,
    "c": 0.12,
    "h": 240.2
  },
  "luminance": 0.46491
}

Semantic roles & 50–950 ramp

primary

#66BEF9

secondary

#F3D9C8

accent

#5C00E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BEF9

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

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