#66A4DC#66A4DC

#66A4DC is a light, moderate cyan. Relative luminance 0.345; OKLCH L 69.9% C 0.105 H 247.1°. Best body text is #000000 at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#66A4DC
RGB	rgb(102, 164, 220)
HSL	hsl(208, 63%, 63%)
HSV	hsv(208, 54%, 86%)
CMYK	cmyk(53.6%, 25.5%, 0%, 13.7%)
CIE-LAB	lab(65.39, -4.19, -34.47)
CIE-LCH	lch(65.39, 34.73, 263.08°)
OKLab	oklab(69.94% -0.0407 -0.0966)
OKLCH	oklch(69.94% 0.105 247.1)
XYZ	xyz(31.6686, 34.5404, 72.6944)
Luminance	0.3454 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A4DC #DC9E66

analogous

#66DCD9 #66A4DC #6669DC

triadic

#66A4DC #DC66A4 #A4DC66

tetradic

#66A4DC #D966DC #DC9E66 #69DC66

square

#66A4DC #D966DC #DC9E66 #69DC66

split-complementary

#66A4DC #DC6669 #DCD966

monochromatic

#2567A2 #3486D1 #66A4DC #98C2E7 #CADFF3

Accessibility & contrast

On white

2.66

#66A4DC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.91

#66A4DC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A4DC

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A4DC	#FFFFFF	#000000	##000000
##66A4DC	1.00	2.66	7.91	7.91
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.91	21.00	1.00	1.00
##000000	7.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8DA5DF

Deuteranopia (green-blind)

#7D99DB

Tritanopia (blue-blind)

#1AB1B7

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66a4dc;
/* rgb */ color: rgb(102, 164, 220);
/* oklch */ color: oklch(69.9% 0.105 247.1);

Tailwind

colors: {
  custom: {
    50: '#99bee7',
    500: '#66a4dc',
    950: '#000000',
  },
}

SCSS

$custom: #66a4dc;
$custom-light: #99bee7;
$custom-dark: #000000;

JSON

{
  "hex": "#66a4dc",
  "rgb": {
    "r": 102,
    "g": 164,
    "b": 220
  },
  "hsl": {
    "h": 208.475,
    "s": 62.766,
    "l": 63.137
  },
  "oklch": {
    "l": 0.69941,
    "c": 0.1048,
    "h": 247.1
  },
  "luminance": 0.34543
}

Semantic roles & 50–950 ramp

primary

#66A4DC

secondary

#E4CEBA

accent

#6E1BCB

background

#F9FBFE

surface

#F2F6FC

border

#CCD0D5

text

#0E1216

muted

#7E8184

Preview Lab

Preview with #66A4DC

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

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