#66C8DC#66C8DC

#66C8DC is a light, moderate cyan. Relative luminance 0.493; OKLCH L 78.1% C 0.096 H 212.7°. Best body text is #000000 at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#66C8DC
RGB	rgb(102, 200, 220)
HSL	hsl(190, 63%, 63%)
HSV	hsv(190, 54%, 86%)
CMYK	cmyk(53.6%, 9.1%, 0%, 13.7%)
CIE-LAB	lab(75.64, -23.29, -18.76)
CIE-LCH	lch(75.64, 29.90, 218.85°)
OKLab	oklab(78.09% -0.0808 -0.0519)
OKLCH	oklch(78.09% 0.096 212.7)
XYZ	xyz(39.0469, 49.2971, 75.1538)
Luminance	0.4930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C8DC #DC7A66

analogous

#66DCB5 #66C8DC #668DDC

triadic

#66C8DC #DC66C8 #C8DC66

tetradic

#66C8DC #B566DC #DC7A66 #8DDC66

square

#66C8DC #B566DC #DC7A66 #8DDC66

split-complementary

#66C8DC #DC668D #DCB566

monochromatic

#258DA2 #34B6D1 #66C8DC #98DAE7 #CAECF3

Accessibility & contrast

On white

1.93

#66C8DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.86

#66C8DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C8DC

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C8DC	#FFFFFF	#000000	##000000
##66C8DC	1.00	1.93	10.86	10.86
#FFFFFF	1.93	1.00	21.00	21.00
#000000	10.86	21.00	1.00	1.00
##000000	10.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C2DD

Deuteranopia (green-blind)

#A6B5DC

Tritanopia (blue-blind)

#00D0CE

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #66c8dc;
/* rgb */ color: rgb(102, 200, 220);
/* oklch */ color: oklch(78.1% 0.096 212.7);

Tailwind

colors: {
  custom: {
    50: '#9bd9e6',
    500: '#66c8dc',
    950: '#000000',
  },
}

SCSS

$custom: #66c8dc;
$custom-light: #9bd9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#66c8dc",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 220
  },
  "hsl": {
    "h": 190.169,
    "s": 62.766,
    "l": 63.137
  },
  "oklch": {
    "l": 0.78089,
    "c": 0.09607,
    "h": 212.7
  },
  "luminance": 0.49301
}

Semantic roles & 50–950 ramp

primary

#66C8DC

secondary

#E4C1BA

accent

#391BCB

background

#FAFDFE

surface

#F3FAFC

border

#CDD3D5

text

#0F1416

muted

#7F8384

Preview Lab

Preview with #66C8DC

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

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