#66BFDF#66BFDF

#66BFDF is a light, moderate cyan. Relative luminance 0.454; OKLCH L 76.1% C 0.097 H 223.8°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#66BFDF
RGB	rgb(102, 191, 223)
HSL	hsl(196, 65%, 64%)
HSV	hsv(196, 54%, 87%)
CMYK	cmyk(54.3%, 14.3%, 0%, 12.5%)
CIE-LAB	lab(73.16, -17.84, -24.14)
CIE-LCH	lch(73.16, 30.02, 233.53°)
OKLab	oklab(76.14% -0.0698 -0.067)
OKLCH	oklch(76.14% 0.097 223.8)
XYZ	xyz(37.4245, 45.4107, 76.5907)
Luminance	0.4541 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BFDF #DF8666

analogous

#66DFC2 #66BFDF #6682DF

triadic

#66BFDF #DF66BF #BFDF66

tetradic

#66BFDF #C266DF #DF8666 #82DF66

square

#66BFDF #C266DF #DF8666 #82DF66

split-complementary

#66BFDF #DF6682 #DFC266

monochromatic

#2385A8 #33AAD4 #66BFDF #99D4EA #CBE9F4

Accessibility & contrast

On white

2.08

#66BFDF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#66BFDF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BFDF

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BFDF	#FFFFFF	#000000	##000000
##66BFDF	1.00	2.08	10.08	10.08
#FFFFFF	2.08	1.00	21.00	21.00
#000000	10.08	21.00	1.00	1.00
##000000	10.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ADBBE1

Deuteranopia (green-blind)

#9BAEDF

Tritanopia (blue-blind)

#00C9C9

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bfdf;
/* rgb */ color: rgb(102, 191, 223);
/* oklch */ color: oklch(76.1% 0.097 223.8);

Tailwind

colors: {
  custom: {
    50: '#9ad2e9',
    500: '#66bfdf',
    950: '#000000',
  },
}

SCSS

$custom: #66bfdf;
$custom-light: #9ad2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#66bfdf",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 223
  },
  "hsl": {
    "h": 195.868,
    "s": 65.405,
    "l": 63.725
  },
  "oklch": {
    "l": 0.76144,
    "c": 0.09678,
    "h": 223.8
  },
  "luminance": 0.45414
}

Semantic roles & 50–950 ramp

primary

#66BFDF

secondary

#E6C6BB

accent

#4818CD

background

#FAFCFE

surface

#F3F9FC

border

#CDD2D5

text

#0F1416

muted

#7F8284

Preview Lab

Preview with #66BFDF

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

Preview Lab → · Contrast checker → · Palette generator →