#646664#646664

#646664 is a mid, near-neutral grey. Relative luminance 0.131; OKLCH L 50.8% C 0.004 H 145.5°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#646664
RGB	rgb(100, 102, 100)
HSL	hsl(120, 1%, 40%)
HSV	hsv(120, 2%, 40%)
CMYK	cmyk(2%, 0%, 2%, 60%)
CIE-LAB	lab(42.96, -1.19, 0.86)
CIE-LCH	lch(42.96, 1.47, 144.33°)
OKLab	oklab(50.79% -0.0033 0.0023)
OKLCH	oklch(50.79% 0.004 145.5)
XYZ	xyz(12.3068, 13.1321, 13.9405)
Luminance	0.1313 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646664 #666466

analogous

#656664 #646664 #646665

triadic

#646664 #646466 #666464

tetradic

#646664 #646566 #666466 #666564

square

#646664 #646566 #666466 #666564

split-complementary

#646664 #656466 #666465

monochromatic

#272827 #464746 #646664 #828582 #A1A3A1

Accessibility & contrast

On white

5.79

#646664 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#646664 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646664

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646664	#FFFFFF	#000000	##FFFFFF
##646664	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#666664

Deuteranopia (green-blind)

#666564

Tritanopia (blue-blind)

#646665

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #646664;
/* rgb */ color: rgb(100, 102, 100);
/* oklch */ color: oklch(50.8% 0.004 145.5);

Tailwind

colors: {
  custom: {
    50: '#909190',
    500: '#646664',
    950: '#000000',
  },
}

SCSS

$custom: #646664;
$custom-light: #909190;
$custom-dark: #000000;

JSON

{
  "hex": "#646664",
  "rgb": {
    "r": 100,
    "g": 102,
    "b": 100
  },
  "hsl": {
    "h": 120,
    "s": 0.99,
    "l": 39.608
  },
  "oklch": {
    "l": 0.50785,
    "c": 0.00397,
    "h": 145.5
  },
  "luminance": 0.13132
}

Semantic roles & 50–950 ramp

primary

#646664

secondary

#949294

accent

#7EAAAA

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0C0C

muted

#7D7D7D

Preview Lab

Preview with #646664

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

Preview Lab → · Contrast checker → · Palette generator →