#66DBF9#66DBF9

#66DBF9 is a very light, moderate cyan. Relative luminance 0.603; OKLCH L 83.5% C 0.113 H 217.2°. Best body text is #000000 at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#66DBF9
RGB	rgb(102, 219, 249)
HSL	hsl(192, 92%, 69%)
HSV	hsv(192, 59%, 98%)
CMYK	cmyk(59%, 12%, 0%, 2.4%)
CIE-LAB	lab(82.01, -24.57, -24.59)
CIE-LCH	lch(82.01, 34.76, 225.02°)
OKLab	oklab(83.52% -0.0899 -0.0683)
OKLCH	oklch(83.52% 0.113 217.2)
XYZ	xyz(47.9030, 60.3226, 98.7231)
Luminance	0.6033 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DBF9 #F98466

analogous

#66F9CE #66DBF9 #6692F9

triadic

#66DBF9 #F966DB #DBF966

tetradic

#66DBF9 #CE66F9 #F98466 #92F966

square

#66DBF9 #CE66F9 #F98466 #92F966

split-complementary

#66DBF9 #F96692 #F9CE66

monochromatic

#09B1DC #2BCDF7 #66DBF9 #A1E9FB #DCF7FE

Accessibility & contrast

On white

1.61

#66DBF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.07

#66DBF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DBF9

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DBF9	#FFFFFF	#000000	##000000
##66DBF9	1.00	1.61	13.07	13.07
#FFFFFF	1.61	1.00	21.00	21.00
#000000	13.07	21.00	1.00	1.00
##000000	13.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7D5FB

Deuteranopia (green-blind)

#B2C5F9

Tritanopia (blue-blind)

#00E6E4

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #66dbf9;
/* rgb */ color: rgb(102, 219, 249);
/* oklch */ color: oklch(83.5% 0.113 217.2);

Tailwind

colors: {
  custom: {
    50: '#9ee6fb',
    500: '#66dbf9',
    950: '#000000',
  },
}

SCSS

$custom: #66dbf9;
$custom-light: #9ee6fb;
$custom-dark: #000000;

JSON

{
  "hex": "#66dbf9",
  "rgb": {
    "r": 102,
    "g": 219,
    "b": 249
  },
  "hsl": {
    "h": 192.245,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.83521,
    "c": 0.1129,
    "h": 217.2
  },
  "luminance": 0.60327
}

Semantic roles & 50–950 ramp

primary

#66DBF9

secondary

#D35230

accent

#2F00E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101617

muted

#808485

Preview Lab

Preview with #66DBF9

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

Preview Lab → · Contrast checker → · Palette generator →