#66CBF7#66CBF7

#66CBF7 is a light, moderate cyan. Relative luminance 0.523; OKLCH L 79.8% C 0.113 H 229.0°. Best body text is #000000 at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#66CBF7
RGB	rgb(102, 203, 247)
HSL	hsl(198, 90%, 68%)
HSV	hsv(198, 59%, 97%)
CMYK	cmyk(58.7%, 17.8%, 0%, 3.1%)
CIE-LAB	lab(77.43, -17.05, -30.54)
CIE-LCH	lch(77.43, 34.97, 240.83°)
OKLab	oklab(79.83% -0.074 -0.0852)
OKLCH	oklch(79.83% 0.113 229)
XYZ	xyz(43.6174, 52.2478, 95.7639)
Luminance	0.5225 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CBF7 #F79266

analogous

#66F7DA #66CBF7 #6682F7

triadic

#66CBF7 #F766CB #CBF766

tetradic

#66CBF7 #DA66F7 #F79266 #82F766

square

#66CBF7 #DA66F7 #F79266 #82F766

split-complementary

#66CBF7 #F76682 #F7DA66

monochromatic

#0B99D7 #2CB7F4 #66CBF7 #A0DFFA #DAF3FD

Accessibility & contrast

On white

1.83

#66CBF7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.45

#66CBF7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CBF7

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CBF7	#FFFFFF	#000000	##000000
##66CBF7	1.00	1.83	11.45	11.45
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.45	21.00	1.00	1.00
##000000	11.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C8F9

Deuteranopia (green-blind)

#A0B9F6

Tritanopia (blue-blind)

#00D7D9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #66cbf7;
/* rgb */ color: rgb(102, 203, 247);
/* oklch */ color: oklch(79.8% 0.113 229.0);

Tailwind

colors: {
  custom: {
    50: '#9ddafa',
    500: '#66cbf7',
    950: '#000000',
  },
}

SCSS

$custom: #66cbf7;
$custom-light: #9ddafa;
$custom-dark: #000000;

JSON

{
  "hex": "#66cbf7",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 247
  },
  "hsl": {
    "h": 198.207,
    "s": 90.062,
    "l": 68.431
  },
  "oklch": {
    "l": 0.79833,
    "c": 0.11283,
    "h": 229
  },
  "luminance": 0.52252
}

Semantic roles & 50–950 ramp

primary

#66CBF7

secondary

#D06131

accent

#4600E6

background

#FCFEFF

surface

#F6FBFF

border

#D0D4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CBF7

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

Preview Lab → · Contrast checker → · Palette generator →