#66BFD9#66BFD9

#66BFD9 is a light, moderate cyan. Relative luminance 0.451; OKLCH L 75.9% C 0.093 H 219.2°. Best body text is #000000 at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#66BFD9
RGB	rgb(102, 191, 217)
HSL	hsl(194, 60%, 63%)
HSV	hsv(194, 53%, 85%)
CMYK	cmyk(53%, 12%, 0%, 14.9%)
CIE-LAB	lab(72.95, -19.56, -21.20)
CIE-LCH	lch(72.95, 28.84, 227.31°)
OKLab	oklab(75.91% -0.0721 -0.0587)
OKLCH	oklch(75.91% 0.093 219.2)
XYZ	xyz(36.6298, 45.0929, 72.4057)
Luminance	0.4510 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BFD9 #D98066

analogous

#66D9B9 #66BFD9 #6686D9

triadic

#66BFD9 #D966BF #BFD966

tetradic

#66BFD9 #B966D9 #D98066 #86D966

square

#66BFD9 #B966D9 #D98066 #86D966

split-complementary

#66BFD9 #D96686 #D9B966

monochromatic

#27839D #35AACD #66BFD9 #97D4E5 #C8E8F1

Accessibility & contrast

On white

2.10

#66BFD9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.02

#66BFD9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BFD9

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BFD9	#FFFFFF	#000000	##000000
##66BFD9	1.00	2.10	10.02	10.02
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.02	21.00	1.00	1.00
##000000	10.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AFBADA

Deuteranopia (green-blind)

#9DADD9

Tritanopia (blue-blind)

#09C8C7

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66bfd9;
/* rgb */ color: rgb(102, 191, 217);
/* oklch */ color: oklch(75.9% 0.093 219.2);

Tailwind

colors: {
  custom: {
    50: '#9ad2e4',
    500: '#66bfd9',
    950: '#000000',
  },
}

SCSS

$custom: #66bfd9;
$custom-light: #9ad2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#66bfd9",
  "rgb": {
    "r": 102,
    "g": 191,
    "b": 217
  },
  "hsl": {
    "h": 193.565,
    "s": 60.209,
    "l": 62.549
  },
  "oklch": {
    "l": 0.75908,
    "c": 0.09298,
    "h": 219.2
  },
  "luminance": 0.45096
}

Semantic roles & 50–950 ramp

primary

#66BFD9

secondary

#E2C2B8

accent

#441EC8

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0F1415

muted

#7E8283

Preview Lab

Preview with #66BFD9

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

Preview Lab → · Contrast checker → · Palette generator →