#66D1FA#66D1FA

#66D1FA is a light, moderate cyan. Relative luminance 0.553; OKLCH L 81.3% C 0.114 H 225.9°. Best body text is #000000 at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#66D1FA
RGB	rgb(102, 209, 250)
HSL	hsl(197, 94%, 69%)
HSV	hsv(197, 59%, 98%)
CMYK	cmyk(59.2%, 16.4%, 0%, 2%)
CIE-LAB	lab(79.23, -19.24, -29.38)
CIE-LCH	lch(79.23, 35.12, 236.77°)
OKLab	oklab(81.3% -0.0792 -0.0819)
OKLCH	oklch(81.3% 0.114 225.9)
XYZ	xyz(45.5285, 55.3234, 98.7031)
Luminance	0.5533 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D1FA #FA8F66

analogous

#66FAD9 #66D1FA #6687FA

triadic

#66D1FA #FA66D1 #D1FA66

tetradic

#66D1FA #D966FA #FA8F66 #87FA66

square

#66D1FA #D966FA #FA8F66 #87FA66

split-complementary

#66D1FA #FA6687 #FAD966

monochromatic

#07A3DE #2BBFF8 #66D1FA #A1E3FC #DDF5FE

Accessibility & contrast

On white

1.74

#66D1FA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.07

#66D1FA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D1FA

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D1FA	#FFFFFF	#000000	##000000
##66D1FA	1.00	1.74	12.07	12.07
#FFFFFF	1.74	1.00	21.00	21.00
#000000	12.07	21.00	1.00	1.00
##000000	12.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBCDFC

Deuteranopia (green-blind)

#A6BDFA

Tritanopia (blue-blind)

#00DDDE

Achromatopsia (no color)

#C4C4C4

Design tokens & code

CSS

--color: #66d1fa;
/* rgb */ color: rgb(102, 209, 250);
/* oklch */ color: oklch(81.3% 0.114 225.9);

Tailwind

colors: {
  custom: {
    50: '#9edffc',
    500: '#66d1fa',
    950: '#000000',
  },
}

SCSS

$custom: #66d1fa;
$custom-light: #9edffc;
$custom-dark: #000000;

JSON

{
  "hex": "#66d1fa",
  "rgb": {
    "r": 102,
    "g": 209,
    "b": 250
  },
  "hsl": {
    "h": 196.622,
    "s": 93.671,
    "l": 69.02
  },
  "oklch": {
    "l": 0.81304,
    "c": 0.11389,
    "h": 225.9
  },
  "luminance": 0.55328
}

Semantic roles & 50–950 ramp

primary

#66D1FA

secondary

#D45E30

accent

#4000E6

background

#FCFEFF

surface

#F6FCFF

border

#D0D5D7

text

#101517

muted

#808485

Preview Lab

Preview with #66D1FA

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

Preview Lab → · Contrast checker → · Palette generator →