#66BBD9#66BBD9

#66BBD9 is a light, moderate cyan. Relative luminance 0.434; OKLCH L 75.0% C 0.093 H 223.3°. Best body text is #000000 at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#66BBD9
RGB	rgb(102, 187, 217)
HSL	hsl(196, 60%, 63%)
HSV	hsv(196, 53%, 85%)
CMYK	cmyk(53%, 13.8%, 0%, 14.9%)
CIE-LAB	lab(71.81, -17.49, -22.95)
CIE-LCH	lch(71.81, 28.85, 232.69°)
OKLab	oklab(74.99% -0.0676 -0.0636)
OKLCH	oklch(74.99% 0.093 223.3)
XYZ	xyz(35.7694, 43.3720, 72.1188)
Luminance	0.4338 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BBD9 #D98466

analogous

#66D9BD #66BBD9 #6682D9

triadic

#66BBD9 #D966BB #BBD966

tetradic

#66BBD9 #BD66D9 #D98466 #82D966

square

#66BBD9 #BD66D9 #D98466 #82D966

split-complementary

#66BBD9 #D96682 #D9BD66

monochromatic

#277F9D #35A5CD #66BBD9 #97D1E5 #C8E7F1

Accessibility & contrast

On white

2.17

#66BBD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.67

#66BBD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BBD9

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BBD9	#FFFFFF	#000000	##000000
##66BBD9	1.00	2.17	9.67	9.67
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.67	21.00	1.00	1.00
##000000	9.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AAB7DB

Deuteranopia (green-blind)

#99AAD9

Tritanopia (blue-blind)

#0FC4C4

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66bbd9;
/* rgb */ color: rgb(102, 187, 217);
/* oklch */ color: oklch(75.0% 0.093 223.3);

Tailwind

colors: {
  custom: {
    50: '#9acfe4',
    500: '#66bbd9',
    950: '#000000',
  },
}

SCSS

$custom: #66bbd9;
$custom-light: #9acfe4;
$custom-dark: #000000;

JSON

{
  "hex": "#66bbd9",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 217
  },
  "hsl": {
    "h": 195.652,
    "s": 60.209,
    "l": 62.549
  },
  "oklch": {
    "l": 0.74993,
    "c": 0.09286,
    "h": 223.3
  },
  "luminance": 0.43375
}

Semantic roles & 50–950 ramp

primary

#66BBD9

secondary

#E2C3B8

accent

#4A1EC8

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0F1315

muted

#7E8283

Preview Lab

Preview with #66BBD9

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

Preview Lab → · Contrast checker → · Palette generator →