#66CDF5#66CDF5

#66CDF5 is a light, moderate cyan. Relative luminance 0.531; OKLCH L 80.2% C 0.111 H 226.2°. Best body text is #000000 at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#66CDF5
RGB	rgb(102, 205, 245)
HSL	hsl(197, 88%, 68%)
HSV	hsv(197, 58%, 96%)
CMYK	cmyk(58.4%, 16.3%, 0%, 3.9%)
CIE-LAB	lab(77.92, -18.67, -28.71)
CIE-LCH	lch(77.92, 34.25, 236.97°)
OKLab	oklab(80.2% -0.0768 -0.08)
OKLCH	oklch(80.2% 0.111 226.2)
XYZ	xyz(43.7858, 53.0758, 94.3056)
Luminance	0.5308 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CDF5 #F58E66

analogous

#66F5D5 #66CDF5 #6685F5

triadic

#66CDF5 #F566CD #CDF566

tetradic

#66CDF5 #D566F5 #F58E66 #85F566

square

#66CDF5 #D566F5 #F58E66 #85F566

split-complementary

#66CDF5 #F56685 #F5D566

monochromatic

#0E9CD3 #2DBAF1 #66CDF5 #9FE0F9 #D9F3FD

Accessibility & contrast

On white

1.81

#66CDF5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.62

#66CDF5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CDF5

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CDF5	#FFFFFF	#000000	##000000
##66CDF5	1.00	1.81	11.62	11.62
#FFFFFF	1.81	1.00	21.00	21.00
#000000	11.62	21.00	1.00	1.00
##000000	11.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C9F7

Deuteranopia (green-blind)

#A3BAF5

Tritanopia (blue-blind)

#00D9DA

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66cdf5;
/* rgb */ color: rgb(102, 205, 245);
/* oklch */ color: oklch(80.2% 0.111 226.2);

Tailwind

colors: {
  custom: {
    50: '#9ddcf8',
    500: '#66cdf5',
    950: '#000000',
  },
}

SCSS

$custom: #66cdf5;
$custom-light: #9ddcf8;
$custom-dark: #000000;

JSON

{
  "hex": "#66cdf5",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 245
  },
  "hsl": {
    "h": 196.783,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.80201,
    "c": 0.11089,
    "h": 226.2
  },
  "luminance": 0.5308
}

Semantic roles & 50–950 ramp

primary

#66CDF5

secondary

#CE5D31

accent

#4101E4

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66CDF5

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

Preview Lab → · Contrast checker → · Palette generator →