#66B8CE#66B8CE

#66B8CE is a light, moderate cyan. Relative luminance 0.416; OKLCH L 73.9% C 0.086 H 217.3°. Best body text is #000000 at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#66B8CE
RGB	rgb(102, 184, 206)
HSL	hsl(193, 51%, 60%)
HSV	hsv(193, 50%, 81%)
CMYK	cmyk(50.5%, 10.7%, 0%, 19.2%)
CIE-LAB	lab(70.57, -19.04, -18.82)
CIE-LCH	lch(70.57, 26.78, 224.67°)
OKLab	oklab(73.88% -0.0684 -0.052)
OKLCH	oklch(73.88% 0.086 217.3)
XYZ	xyz(33.7563, 41.5591, 64.6234)
Luminance	0.4156 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B8CE #CE7C66

analogous

#66CEB0 #66B8CE #6684CE

triadic

#66B8CE #CE66B8 #B8CE66

tetradic

#66B8CE #B066CE #CE7C66 #84CE66

square

#66B8CE #B066CE #CE7C66 #84CE66

split-complementary

#66B8CE #CE6684 #CEB066

monochromatic

#2D788D #3CA0BB #66B8CE #94CEDD #C3E3EC

Accessibility & contrast

On white

2.26

#66B8CE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.31

#66B8CE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B8CE

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B8CE	#FFFFFF	#000000	##000000
##66B8CE	1.00	2.26	9.31	9.31
#FFFFFF	2.26	1.00	21.00	21.00
#000000	9.31	21.00	1.00	1.00
##000000	9.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A9B3CF

Deuteranopia (green-blind)

#99A7CE

Tritanopia (blue-blind)

#26C0BF

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66b8ce;
/* rgb */ color: rgb(102, 184, 206);
/* oklch */ color: oklch(73.9% 0.086 217.3);

Tailwind

colors: {
  custom: {
    50: '#99cddd',
    500: '#66b8ce',
    950: '#000000',
  },
}

SCSS

$custom: #66b8ce;
$custom-light: #99cddd;
$custom-dark: #000000;

JSON

{
  "hex": "#66b8ce",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 206
  },
  "hsl": {
    "h": 192.692,
    "s": 51.485,
    "l": 60.392
  },
  "oklch": {
    "l": 0.73876,
    "c": 0.08598,
    "h": 217.3
  },
  "luminance": 0.41562
}

Semantic roles & 50–950 ramp

primary

#66B8CE

secondary

#DCBCB4

accent

#4727BF

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #66B8CE

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

Preview Lab → · Contrast checker → · Palette generator →