#66ACEB#66ACEB

#66ACEB is a light, moderate cyan. Relative luminance 0.383; OKLCH L 72.4% C 0.116 H 247.3°. Best body text is #000000 at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#66ACEB
RGB	rgb(102, 172, 235)
HSL	hsl(208, 77%, 66%)
HSV	hsv(208, 57%, 92%)
CMYK	cmyk(56.6%, 26.8%, 0%, 7.8%)
CIE-LAB	lab(68.26, -4.05, -38.24)
CIE-LCH	lch(68.26, 38.46, 263.96°)
OKLab	oklab(72.41% -0.0449 -0.1074)
OKLCH	oklch(72.41% 0.116 247.3)
XYZ	xyz(35.2220, 38.3249, 84.1225)
Luminance	0.3833 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACEB #EBA566

analogous

#66EBE7 #66ACEB #6669EB

triadic

#66ACEB #EB66AC #ACEB66

tetradic

#66ACEB #E766EB #EBA566 #69EB66

square

#66ACEB #E766EB #EBA566 #69EB66

split-complementary

#66ACEB #EB6669 #EBE766

monochromatic

#1970BE #308FE4 #66ACEB #9CC9F2 #D2E7F9

Accessibility & contrast

On white

2.42

#66ACEB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.67

#66ACEB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACEB

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACEB	#FFFFFF	#000000	##000000
##66ACEB	1.00	2.42	8.67	8.67
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.67	21.00	1.00	1.00
##000000	8.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91AEEE

Deuteranopia (green-blind)

#80A1EA

Tritanopia (blue-blind)

#00BBC2

Achromatopsia (no color)

#A6A6A6

Design tokens & code

CSS

--color: #66aceb;
/* rgb */ color: rgb(102, 172, 235);
/* oklch */ color: oklch(72.4% 0.116 247.3);

Tailwind

colors: {
  custom: {
    50: '#9bc4f1',
    500: '#66aceb',
    950: '#000000',
  },
}

SCSS

$custom: #66aceb;
$custom-light: #9bc4f1;
$custom-dark: #000000;

JSON

{
  "hex": "#66aceb",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 235
  },
  "hsl": {
    "h": 208.421,
    "s": 76.879,
    "l": 66.078
  },
  "oklch": {
    "l": 0.7241,
    "c": 0.11642,
    "h": 247.3
  },
  "luminance": 0.38328
}

Semantic roles & 50–950 ramp

primary

#66ACEB

secondary

#ECD5C1

accent

#6D0CD9

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1217

muted

#7F8185

Preview Lab

Preview with #66ACEB

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

Preview Lab → · Contrast checker → · Palette generator →