#66B9F7#66B9F7

#66B9F7 is a light, vivid cyan. Relative luminance 0.442; OKLCH L 75.8% C 0.121 H 242.9°. Best body text is #000000 at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#66B9F7
RGB	rgb(102, 185, 247)
HSL	hsl(206, 90%, 68%)
HSV	hsv(206, 59%, 97%)
CMYK	cmyk(58.7%, 25.1%, 0%, 3.1%)
CIE-LAB	lab(72.38, -7.49, -38.34)
CIE-LCH	lch(72.38, 39.06, 258.94°)
OKLab	oklab(75.83% -0.0551 -0.1076)
OKLCH	oklch(75.83% 0.121 242.9)
XYZ	xyz(39.6107, 44.2344, 94.4283)
Luminance	0.4424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B9F7 #F7A466

analogous

#66F7EC #66B9F7 #6670F7

triadic

#66B9F7 #F766B9 #B9F766

tetradic

#66B9F7 #EC66F7 #F7A466 #70F766

square

#66B9F7 #EC66F7 #F7A466 #70F766

split-complementary

#66B9F7 #F76670 #F7EC66

monochromatic

#0B80D7 #2C9EF4 #66B9F7 #A0D4FA #DAEEFD

Accessibility & contrast

On white

2.13

#66B9F7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.85

#66B9F7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B9F7

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B9F7	#FFFFFF	#000000	##000000
##66B9F7	1.00	2.13	9.85	9.85
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.85	21.00	1.00	1.00
##000000	9.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EBAFA

Deuteranopia (green-blind)

#8AABF6

Tritanopia (blue-blind)

#00C8CE

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66b9f7;
/* rgb */ color: rgb(102, 185, 247);
/* oklch */ color: oklch(75.8% 0.121 242.9);

Tailwind

colors: {
  custom: {
    50: '#9ccdfa',
    500: '#66b9f7',
    950: '#000000',
  },
}

SCSS

$custom: #66b9f7;
$custom-light: #9ccdfa;
$custom-dark: #000000;

JSON

{
  "hex": "#66b9f7",
  "rgb": {
    "r": 102,
    "g": 185,
    "b": 247
  },
  "hsl": {
    "h": 205.655,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.7583,
    "c": 0.1209,
    "h": 242.9
  },
  "luminance": 0.44238
}

Semantic roles & 50–950 ramp

primary

#66B9F7

secondary

#F2D9C7

accent

#6200E6

background

#FAFCFF

surface

#F4F9FF

border

#CED2D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #66B9F7

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

Preview Lab → · Contrast checker → · Palette generator →