#66CFF0#66CFF0

#66CFF0 is a light, moderate cyan. Relative luminance 0.537; OKLCH L 80.5% C 0.107 H 221.2°. Best body text is #000000 at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#66CFF0
RGB	rgb(102, 207, 240)
HSL	hsl(194, 82%, 67%)
HSV	hsv(194, 58%, 94%)
CMYK	cmyk(57.5%, 13.7%, 0%, 5.9%)
CIE-LAB	lab(78.31, -21.14, -25.44)
CIE-LCH	lch(78.31, 33.08, 230.28°)
OKLab	oklab(80.45% -0.0807 -0.0707)
OKLCH	oklch(80.45% 0.107 221.2)
XYZ	xyz(43.5143, 53.7375, 90.5004)
Luminance	0.5374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CFF0 #F08766

analogous

#66F0CC #66CFF0 #668AF0

triadic

#66CFF0 #F066CF #CFF066

tetradic

#66CFF0 #CC66F0 #F08766 #8AF066

square

#66CFF0 #CC66F0 #F08766 #8AF066

split-complementary

#66CFF0 #F0668A #F0CC66

monochromatic

#149DC8 #2EBEEB #66CFF0 #9EE0F5 #D5F2FB

Accessibility & contrast

On white

1.79

#66CFF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.75

#66CFF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CFF0

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CFF0	#FFFFFF	#000000	##000000
##66CFF0	1.00	1.79	11.75	11.75
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.75	21.00	1.00	1.00
##000000	11.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBCAF2

Deuteranopia (green-blind)

#A7BBF0

Tritanopia (blue-blind)

#00DAD9

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #66cff0;
/* rgb */ color: rgb(102, 207, 240);
/* oklch */ color: oklch(80.5% 0.107 221.2);

Tailwind

colors: {
  custom: {
    50: '#9dddf5',
    500: '#66cff0',
    950: '#000000',
  },
}

SCSS

$custom: #66cff0;
$custom-light: #9dddf5;
$custom-dark: #000000;

JSON

{
  "hex": "#66cff0",
  "rgb": {
    "r": 102,
    "g": 207,
    "b": 240
  },
  "hsl": {
    "h": 194.348,
    "s": 82.143,
    "l": 67.059
  },
  "oklch": {
    "l": 0.80452,
    "c": 0.10733,
    "h": 221.2
  },
  "luminance": 0.53742
}

Semantic roles & 50–950 ramp

primary

#66CFF0

secondary

#C55835

accent

#3B07DF

background

#FCFEFF

surface

#F6FCFE

border

#D0D5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CFF0

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

Preview Lab → · Contrast checker → · Palette generator →