#645656#645656

#645656 is a mid, near-neutral grey. Relative luminance 0.100; OKLCH L 46.7% C 0.018 H 17.8°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#645656
RGB	rgb(100, 86, 86)
HSL	hsl(0, 8%, 36%)
HSV	hsv(0, 14%, 39%)
CMYK	cmyk(0%, 14%, 14%, 60.8%)
CIE-LAB	lab(37.91, 5.73, 2.12)
CIE-LCH	lch(37.91, 6.11, 20.28°)
OKLab	oklab(46.69% 0.0176 0.0056)
OKLCH	oklch(46.69% 0.018 17.8)
XYZ	xyz(10.2629, 10.0370, 10.1990)
Luminance	0.1004 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645656 #566464

analogous

#64565D #645656 #645D56

triadic

#645656 #566456 #565664

tetradic

#645656 #5D6456 #566464 #5D5664

square

#645656 #5D6456 #566464 #5D5664

split-complementary

#645656 #56645D #565D64

monochromatic

#221D1D #433A3A #645656 #857272 #A29393

Accessibility & contrast

On white

6.98

#645656 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#645656 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645656

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645656	#FFFFFF	#000000	##FFFFFF
##645656	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585856

Deuteranopia (green-blind)

#5B5A56

Tritanopia (blue-blind)

#675556

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #645656;
/* rgb */ color: rgb(100, 86, 86);
/* oklch */ color: oklch(46.7% 0.018 17.8);

Tailwind

colors: {
  custom: {
    50: '#908585',
    500: '#645656',
    950: '#000000',
  },
}

SCSS

$custom: #645656;
$custom-light: #908585;
$custom-dark: #000000;

JSON

{
  "hex": "#645656",
  "rgb": {
    "r": 100,
    "g": 86,
    "b": 86
  },
  "hsl": {
    "h": 0,
    "s": 7.527,
    "l": 36.471
  },
  "oklch": {
    "l": 0.46691,
    "c": 0.01846,
    "h": 17.8
  },
  "luminance": 0.10037
}

Semantic roles & 50–950 ramp

primary

#645656

secondary

#859191

accent

#B1B177

background

#F8F8F8

surface

#F0EFEF

border

#CBCACA

text

#0C0B0B

muted

#7D7C7C

Preview Lab

Preview with #645656

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

Preview Lab → · Contrast checker → · Palette generator →