#66647E#66647E

#66647E is a mid, muted blue. Relative luminance 0.134; OKLCH L 51.5% C 0.041 H 288.4°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#66647E
RGB	rgb(102, 100, 126)
HSL	hsl(245, 12%, 44%)
HSV	hsv(245, 21%, 49%)
CMYK	cmyk(19%, 20.6%, 0%, 50.6%)
CIE-LAB	lab(43.43, 6.66, -14.19)
CIE-LCH	lch(43.43, 15.67, 295.13°)
OKLab	oklab(51.48% 0.0129 -0.0387)
OKLCH	oklch(51.48% 0.041 288.4)
XYZ	xyz(13.8017, 13.4453, 21.6027)
Luminance	0.1344 (WCAG relative)
Temperature	neutral
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66647E #7C7E64

analogous

#646F7E #66647E #73647E

triadic

#66647E #7E6664 #647E66

tetradic

#66647E #7E646F #7C7E64 #647E73

square

#66647E #7E646F #7C7E64 #647E73

split-complementary

#66647E #7E7364 #6F7E64

monochromatic

#2F2E3A #4A495C #66647E #85839C #A6A5B7

Accessibility & contrast

On white

5.69

#66647E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#66647E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #66647E

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66647E	#FFFFFF	#000000	##FFFFFF
##66647E	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E677F

Deuteranopia (green-blind)

#5E667D

Tritanopia (blue-blind)

#61686D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #66647e;
/* rgb */ color: rgb(102, 100, 126);
/* oklch */ color: oklch(51.5% 0.041 288.4);

Tailwind

colors: {
  custom: {
    50: '#9290a3',
    500: '#66647e',
    950: '#000000',
  },
}

SCSS

$custom: #66647e;
$custom-light: #9290a3;
$custom-dark: #000000;

JSON

{
  "hex": "#66647e",
  "rgb": {
    "r": 102,
    "g": 100,
    "b": 126
  },
  "hsl": {
    "h": 244.615,
    "s": 11.504,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51479,
    "c": 0.04082,
    "h": 288.4
  },
  "luminance": 0.13445
}

Semantic roles & 50–950 ramp

primary

#66647E

secondary

#A5A797

accent

#B473AF

background

#F8F8FA

surface

#F0F0F3

border

#CBCBCD

text

#0D0C0F

muted

#7D7D7F

Preview Lab

Preview with #66647E

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

Preview Lab → · Contrast checker → · Palette generator →