#645C5E#645C5E

#645C5E is a mid, near-neutral grey. Relative luminance 0.112; OKLCH L 48.3% C 0.011 H 0.5°. Best body text is #FFFFFF at 6.49:1 contrast (WCAG AA passes).

Color values

HEX	#645C5E
RGB	rgb(100, 92, 94)
HSL	hsl(345, 4%, 38%)
HSV	hsv(345, 8%, 39%)
CMYK	cmyk(0%, 8%, 6%, 60.8%)
CIE-LAB	lab(39.87, 3.61, 0.01)
CIE-LCH	lch(39.87, 3.61, 0.22°)
OKLab	oklab(48.3% 0.0107 0.0001)
OKLCH	oklch(48.3% 0.011 0.5)
XYZ	xyz(11.1028, 11.1719, 12.1590)
Luminance	0.1117 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C5E #5C6462

analogous

#645C62 #645C5E #645E5C

triadic

#645C5E #5E645C #5C5E64

tetradic

#645C5E #62645C #5C6462 #5E5C64

square

#645C5E #62645C #5C6462 #5E5C64

split-complementary

#645C5E #5C645E #5C6264

monochromatic

#242122 #443F40 #645C5E #84797C #A1999B

Accessibility & contrast

On white

6.49

#645C5E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#645C5E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C5E

6.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C5E	#FFFFFF	#000000	##FFFFFF
##645C5E	1.00	6.49	3.23	6.49
#FFFFFF	6.49	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5D5E

Deuteranopia (green-blind)

#5F5E5E

Tritanopia (blue-blind)

#665C5D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #645c5e;
/* rgb */ color: rgb(100, 92, 94);
/* oklch */ color: oklch(48.3% 0.011 0.5);

Tailwind

colors: {
  custom: {
    50: '#908a8b',
    500: '#645c5e',
    950: '#000000',
  },
}

SCSS

$custom: #645c5e;
$custom-light: #908a8b;
$custom-dark: #000000;

JSON

{
  "hex": "#645c5e",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 94
  },
  "hsl": {
    "h": 345,
    "s": 4.167,
    "l": 37.647
  },
  "oklch": {
    "l": 0.48299,
    "c": 0.01074,
    "h": 0.5
  },
  "luminance": 0.11172
}

Semantic roles & 50–950 ramp

primary

#645C5E

secondary

#8B9190

accent

#ADA17A

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0B0C

muted

#7D7C7D

Preview Lab

Preview with #645C5E

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

Preview Lab → · Contrast checker → · Palette generator →