#666FAE#666FAE

#666FAE is a mid, moderate blue. Relative luminance 0.172; OKLCH L 56.1% C 0.098 H 276.6°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#666FAE
RGB	rgb(102, 111, 174)
HSL	hsl(233, 31%, 54%)
HSV	hsv(233, 41%, 68%)
CMYK	cmyk(41.4%, 36.2%, 0%, 31.8%)
CIE-LAB	lab(48.57, 13.00, -34.69)
CIE-LCH	lch(48.57, 37.05, 290.55°)
OKLab	oklab(56.15% 0.0112 -0.0974)
OKLCH	oklch(56.15% 0.098 276.6)
XYZ	xyz(18.8016, 17.2488, 42.3749)
Luminance	0.1725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666FAE #AEA566

analogous

#6693AE #666FAE #8166AE

triadic

#666FAE #AE666F #6FAE66

tetradic

#666FAE #AE6693 #AEA566 #66AE81

square

#666FAE #AE6693 #AEA566 #66AE81

split-complementary

#666FAE #AE8166 #93AE66

monochromatic

#353B64 #4A538C #666FAE #8E95C3 #B6BAD8

Accessibility & contrast

On white

4.72

#666FAE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#666FAE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666FAE

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666FAE	#FFFFFF	#000000	##FFFFFF
##666FAE	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5976B1

Deuteranopia (green-blind)

#5471AD

Tritanopia (blue-blind)

#4F7C86

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #666fae;
/* rgb */ color: rgb(102, 111, 174);
/* oklch */ color: oklch(56.1% 0.098 276.6);

Tailwind

colors: {
  custom: {
    50: '#9598c6',
    500: '#666fae',
    950: '#000000',
  },
}

SCSS

$custom: #666fae;
$custom-light: #9598c6;
$custom-dark: #000000;

JSON

{
  "hex": "#666fae",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 174
  },
  "hsl": {
    "h": 232.5,
    "s": 30.769,
    "l": 54.118
  },
  "oklch": {
    "l": 0.56148,
    "c": 0.09802,
    "h": 276.6
  },
  "luminance": 0.1725
}

Semantic roles & 50–950 ramp

primary

#666FAE

secondary

#C7C3A9

accent

#BA61C7

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #666FAE

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

Preview Lab → · Contrast checker → · Palette generator →