#66BDEE#66BDEE

#66BDEE is a light, moderate cyan. Relative luminance 0.454; OKLCH L 76.3% C 0.110 H 235.4°. Best body text is #000000 at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#66BDEE
RGB	rgb(102, 189, 238)
HSL	hsl(202, 80%, 67%)
HSV	hsv(202, 57%, 93%)
CMYK	cmyk(57.1%, 20.6%, 0%, 6.7%)
CIE-LAB	lab(73.15, -12.38, -32.29)
CIE-LCH	lch(73.15, 34.58, 249.02°)
OKLab	oklab(76.32% -0.0623 -0.0902)
OKLCH	oklch(76.32% 0.11 235.4)
XYZ	xyz(39.1039, 45.3894, 87.5726)
Luminance	0.4539 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BDEE #EE9766

analogous

#66EEDB #66BDEE #6679EE

triadic

#66BDEE #EE66BD #BDEE66

tetradic

#66BDEE #DB66EE #EE9766 #79EE66

square

#66BDEE #DB66EE #EE9766 #79EE66

split-complementary

#66BDEE #EE6679 #EEDB66

monochromatic

#1685C4 #2FA5E8 #66BDEE #9DD5F4 #D4EDFA

Accessibility & contrast

On white

2.08

#66BDEE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.08

#66BDEE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BDEE

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BDEE	#FFFFFF	#000000	##000000
##66BDEE	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)

#A6BCF0

Deuteranopia (green-blind)

#93ADED

Tritanopia (blue-blind)

#00CACD

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66bdee;
/* rgb */ color: rgb(102, 189, 238);
/* oklch */ color: oklch(76.3% 0.110 235.4);

Tailwind

colors: {
  custom: {
    50: '#9cd0f3',
    500: '#66bdee',
    950: '#000000',
  },
}

SCSS

$custom: #66bdee;
$custom-light: #9cd0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#66bdee",
  "rgb": {
    "r": 102,
    "g": 189,
    "b": 238
  },
  "hsl": {
    "h": 201.618,
    "s": 80,
    "l": 66.667
  },
  "oklch": {
    "l": 0.76316,
    "c": 0.10963,
    "h": 235.4
  },
  "luminance": 0.45393
}

Semantic roles & 50–950 ramp

primary

#66BDEE

secondary

#EED2C2

accent

#5509DC

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1417

muted

#7F8285

Preview Lab

Preview with #66BDEE

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

Preview Lab → · Contrast checker → · Palette generator →