#66BDEC#66BDEC

#66BDEC is a light, moderate cyan. Relative luminance 0.453; OKLCH L 76.2% C 0.108 H 234.2°. Best body text is #000000 at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#66BDEC
RGB	rgb(102, 189, 236)
HSL	hsl(201, 78%, 66%)
HSV	hsv(201, 57%, 93%)
CMYK	cmyk(56.8%, 19.9%, 0%, 7.5%)
CIE-LAB	lab(73.07, -12.98, -31.33)
CIE-LCH	lch(73.07, 33.91, 247.49°)
OKLab	oklab(76.23% -0.063 -0.0875)
OKLCH	oklch(76.23% 0.108 234.2)
XYZ	xyz(38.8117, 45.2725, 86.0338)
Luminance	0.4528 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDEC #EC9566

analogous

#66ECD8 #66BDEC #667AEC

triadic

#66BDEC #EC66BD #BDEC66

tetradic

#66BDEC #D866EC #EC9566 #7AEC66

square

#66BDEC #D866EC #EC9566 #7AEC66

split-complementary

#66BDEC #EC667A #ECD866

monochromatic

#1885C0 #30A6E5 #66BDEC #9CD4F3 #D3ECFA

Accessibility & contrast

On white

2.09

#66BDEC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.06

#66BDEC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDEC

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDEC	#FFFFFF	#000000	##000000
##66BDEC	1.00	2.09	10.06	10.06
#FFFFFF	2.09	1.00	21.00	21.00
#000000	10.06	21.00	1.00	1.00
##000000	10.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7BBEE

Deuteranopia (green-blind)

#94ADEB

Tritanopia (blue-blind)

#00C9CD

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bdec;
/* rgb */ color: rgb(102, 189, 236);
/* oklch */ color: oklch(76.2% 0.108 234.2);

Tailwind

colors: {
  custom: {
    50: '#9bd0f2',
    500: '#66bdec',
    950: '#000000',
  },
}

SCSS

$custom: #66bdec;
$custom-light: #9bd0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdec",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 236
  },
  "hsl": {
    "h": 201.045,
    "s": 77.907,
    "l": 66.275
  },
  "oklch": {
    "l": 0.76229,
    "c": 0.10778,
    "h": 234.2
  },
  "luminance": 0.45276
}

Semantic roles & 50–950 ramp

primary

#66BDEC

secondary

#EDD0C1

accent

#540BDA

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDEC

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

Preview Lab → · Contrast checker → · Palette generator →