#66BCDE#66BCDE

#66BCDE is a light, moderate cyan. Relative luminance 0.441; OKLCH L 75.4% C 0.096 H 226.0°. Best body text is #000000 at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#66BCDE
RGB	rgb(102, 188, 222)
HSL	hsl(197, 65%, 64%)
HSV	hsv(197, 54%, 87%)
CMYK	cmyk(54.1%, 15.3%, 0%, 12.9%)
CIE-LAB	lab(72.27, -16.57, -24.96)
CIE-LCH	lch(72.27, 29.96, 236.42°)
OKLab	oklab(75.42% -0.0669 -0.0693)
OKLCH	oklch(75.42% 0.096 226)
XYZ	xyz(36.6425, 44.0619, 75.6669)
Luminance	0.4406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BCDE #DE8866

analogous

#66DEC4 #66BCDE #6680DE

triadic

#66BCDE #DE66BC #BCDE66

tetradic

#66BCDE #C466DE #DE8866 #80DE66

square

#66BCDE #C466DE #DE8866 #80DE66

split-complementary

#66BCDE #DE6680 #DEC466

monochromatic

#2481A6 #34A6D3 #66BCDE #98D2E9 #CBE8F4

Accessibility & contrast

On white

2.14

#66BCDE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.81

#66BCDE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BCDE

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BCDE	#FFFFFF	#000000	##000000
##66BCDE	1.00	2.14	9.81	9.81
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.81	21.00	1.00	1.00
##000000	9.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB9E0

Deuteranopia (green-blind)

#98ACDE

Tritanopia (blue-blind)

#00C6C7

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66bcde;
/* rgb */ color: rgb(102, 188, 222);
/* oklch */ color: oklch(75.4% 0.096 226.0);

Tailwind

colors: {
  custom: {
    50: '#9ad0e8',
    500: '#66bcde',
    950: '#000000',
  },
}

SCSS

$custom: #66bcde;
$custom-light: #9ad0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#66bcde",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 222
  },
  "hsl": {
    "h": 197,
    "s": 64.516,
    "l": 63.529
  },
  "oklch": {
    "l": 0.75421,
    "c": 0.09634,
    "h": 226
  },
  "luminance": 0.44065
}

Semantic roles & 50–950 ramp

primary

#66BCDE

secondary

#E5C7BB

accent

#4C19CC

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1416

muted

#7E8284

Preview Lab

Preview with #66BCDE

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

Preview Lab → · Contrast checker → · Palette generator →