#66D4F5#66D4F5

#66D4F5 is a light, moderate cyan. Relative luminance 0.565; OKLCH L 81.8% C 0.110 H 220.3°. Best body text is #000000 at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#66D4F5
RGB	rgb(102, 212, 245)
HSL	hsl(194, 88%, 68%)
HSV	hsv(194, 58%, 96%)
CMYK	cmyk(58.4%, 13.5%, 0%, 3.9%)
CIE-LAB	lab(79.90, -22.22, -25.69)
CIE-LCH	lch(79.90, 33.96, 229.14°)
OKLab	oklab(81.78% -0.0841 -0.0714)
OKLCH	oklch(81.78% 0.11 220.3)
XYZ	xyz(45.4979, 56.4999, 94.8763)
Luminance	0.5650 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D4F5 #F58766

analogous

#66F5CE #66D4F5 #668CF5

triadic

#66D4F5 #F566D4 #D4F566

tetradic

#66D4F5 #CE66F5 #F58766 #8CF566

square

#66D4F5 #CE66F5 #F58766 #8CF566

split-complementary

#66D4F5 #F5668C #F5CE66

monochromatic

#0EA5D3 #2DC4F1 #66D4F5 #9FE4F9 #D9F4FD

Accessibility & contrast

On white

1.71

#66D4F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.30

#66D4F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D4F5

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D4F5	#FFFFFF	#000000	##000000
##66D4F5	1.00	1.71	12.30	12.30
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.30	21.00	1.00	1.00
##000000	12.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C0CFF7

Deuteranopia (green-blind)

#ABBFF5

Tritanopia (blue-blind)

#00DFDE

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66d4f5;
/* rgb */ color: rgb(102, 212, 245);
/* oklch */ color: oklch(81.8% 0.110 220.3);

Tailwind

colors: {
  custom: {
    50: '#9de1f8',
    500: '#66d4f5',
    950: '#000000',
  },
}

SCSS

$custom: #66d4f5;
$custom-light: #9de1f8;
$custom-dark: #000000;

JSON

{
  "hex": "#66d4f5",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 245
  },
  "hsl": {
    "h": 193.846,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.81781,
    "c": 0.11035,
    "h": 220.3
  },
  "luminance": 0.56504
}

Semantic roles & 50–950 ramp

primary

#66D4F5

secondary

#CE5531

accent

#3601E4

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #66D4F5

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

Preview Lab → · Contrast checker → · Palette generator →