#66BBDC#66BBDC

#66BBDC is a light, moderate cyan. Relative luminance 0.435; OKLCH L 75.1% C 0.095 H 225.6°. Best body text is #000000 at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#66BBDC
RGB	rgb(102, 187, 220)
HSL	hsl(197, 63%, 63%)
HSV	hsv(197, 54%, 86%)
CMYK	cmyk(53.6%, 15%, 0%, 13.7%)
CIE-LAB	lab(71.91, -16.63, -24.42)
CIE-LCH	lch(71.91, 29.54, 235.75°)
OKLab	oklab(75.11% -0.0665 -0.0678)
OKLCH	oklch(75.11% 0.095 225.6)
XYZ	xyz(36.1632, 43.5295, 74.1926)
Luminance	0.4353 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBDC #DC8766

analogous

#66DCC2 #66BBDC #6680DC

triadic

#66BBDC #DC66BB #BBDC66

tetradic

#66BBDC #C266DC #DC8766 #80DC66

square

#66BBDC #C266DC #DC8766 #80DC66

split-complementary

#66BBDC #DC6680 #DCC266

monochromatic

#257FA2 #34A5D1 #66BBDC #98D1E7 #CAE7F3

Accessibility & contrast

On white

2.16

#66BBDC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.71

#66BBDC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBDC

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBDC	#FFFFFF	#000000	##000000
##66BBDC	1.00	2.16	9.71	9.71
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.71	21.00	1.00	1.00
##000000	9.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B8DE

Deuteranopia (green-blind)

#98ABDC

Tritanopia (blue-blind)

#02C5C6

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66bbdc;
/* rgb */ color: rgb(102, 187, 220);
/* oklch */ color: oklch(75.1% 0.095 225.6);

Tailwind

colors: {
  custom: {
    50: '#9acfe7',
    500: '#66bbdc',
    950: '#000000',
  },
}

SCSS

$custom: #66bbdc;
$custom-light: #9acfe7;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbdc",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 220
  },
  "hsl": {
    "h": 196.78,
    "s": 62.766,
    "l": 63.137
  },
  "oklch": {
    "l": 0.75113,
    "c": 0.09498,
    "h": 225.6
  },
  "luminance": 0.43533
}

Semantic roles & 50–950 ramp

primary

#66BBDC

secondary

#E4C6BA

accent

#4C1BCB

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #66BBDC

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

Preview Lab → · Contrast checker → · Palette generator →