#66ACDC#66ACDC

#66ACDC is a light, moderate cyan. Relative luminance 0.375; OKLCH L 71.7% C 0.100 H 240.1°. Best body text is #000000 at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#66ACDC
RGB	rgb(102, 172, 220)
HSL	hsl(204, 63%, 63%)
HSV	hsv(204, 54%, 86%)
CMYK	cmyk(53.6%, 21.8%, 0%, 13.7%)
CIE-LAB	lab(67.65, -8.61, -30.98)
CIE-LCH	lch(67.65, 32.15, 254.47°)
OKLab	oklab(71.72% -0.0497 -0.0865)
OKLCH	oklch(71.72% 0.1 240.1)
XYZ	xyz(33.1456, 37.4943, 73.1867)
Luminance	0.3750 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66ACDC #DC9666

analogous

#66DCD1 #66ACDC #6671DC

triadic

#66ACDC #DC66AC #ACDC66

tetradic

#66ACDC #D166DC #DC9666 #71DC66

square

#66ACDC #D166DC #DC9666 #71DC66

split-complementary

#66ACDC #DC6671 #DCD166

monochromatic

#256FA2 #3491D1 #66ACDC #98C7E7 #CAE2F3

Accessibility & contrast

On white

2.47

#66ACDC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.50

#66ACDC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ACDC

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66ACDC	#FFFFFF	#000000	##000000
##66ACDC	1.00	2.47	8.50	8.50
#FFFFFF	2.47	1.00	21.00	21.00
#000000	8.50	21.00	1.00	1.00
##000000	8.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97ACDE

Deuteranopia (green-blind)

#879FDB

Tritanopia (blue-blind)

#14B8BC

Achromatopsia (no color)

#A5A5A5

Design tokens & code

CSS

--color: #66acdc;
/* rgb */ color: rgb(102, 172, 220);
/* oklch */ color: oklch(71.7% 0.100 240.1);

Tailwind

colors: {
  custom: {
    50: '#99c4e7',
    500: '#66acdc',
    950: '#000000',
  },
}

SCSS

$custom: #66acdc;
$custom-light: #99c4e7;
$custom-dark: #000000;

JSON

{
  "hex": "#66acdc",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 220
  },
  "hsl": {
    "h": 204.407,
    "s": 62.766,
    "l": 63.137
  },
  "oklch": {
    "l": 0.71723,
    "c": 0.09978,
    "h": 240.1
  },
  "luminance": 0.37497
}

Semantic roles & 50–950 ramp

primary

#66ACDC

secondary

#E4CBBA

accent

#621BCB

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0F1216

muted

#7E8184

Preview Lab

Preview with #66ACDC

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

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