#66BBDE#66BBDE

#66BBDE is a light, moderate cyan. Relative luminance 0.436; OKLCH L 75.2% C 0.096 H 227.0°. Best body text is #000000 at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#66BBDE
RGB	rgb(102, 187, 222)
HSL	hsl(198, 65%, 64%)
HSV	hsv(198, 54%, 87%)
CMYK	cmyk(54.1%, 15.8%, 0%, 12.9%)
CIE-LAB	lab(71.98, -16.05, -25.40)
CIE-LCH	lch(71.98, 30.04, 237.72°)
OKLab	oklab(75.19% -0.0658 -0.0706)
OKLCH	oklch(75.19% 0.096 227)
XYZ	xyz(36.4296, 43.6361, 75.5959)
Luminance	0.4364 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBDE #DE8966

analogous

#66DEC5 #66BBDE #667FDE

triadic

#66BBDE #DE66BB #BBDE66

tetradic

#66BBDE #C566DE #DE8966 #7FDE66

square

#66BBDE #C566DE #DE8966 #7FDE66

split-complementary

#66BBDE #DE667F #DEC566

monochromatic

#2480A6 #34A5D3 #66BBDE #98D1E9 #CBE8F4

Accessibility & contrast

On white

2.16

#66BBDE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.73

#66BBDE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBDE

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBDE	#FFFFFF	#000000	##000000
##66BBDE	1.00	2.16	9.73	9.73
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.73	21.00	1.00	1.00
##000000	9.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A8B8E0

Deuteranopia (green-blind)

#97ABDE

Tritanopia (blue-blind)

#00C5C6

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66bbde;
/* rgb */ color: rgb(102, 187, 222);
/* oklch */ color: oklch(75.2% 0.096 227.0);

Tailwind

colors: {
  custom: {
    50: '#9acfe8',
    500: '#66bbde',
    950: '#000000',
  },
}

SCSS

$custom: #66bbde;
$custom-light: #9acfe8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbde",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 222
  },
  "hsl": {
    "h": 197.5,
    "s": 64.516,
    "l": 63.529
  },
  "oklch": {
    "l": 0.75193,
    "c": 0.09647,
    "h": 227
  },
  "luminance": 0.43639
}

Semantic roles & 50–950 ramp

primary

#66BBDE

secondary

#E5C7BB

accent

#4D19CC

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66BBDE

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

Preview Lab → · Contrast checker → · Palette generator →