#645D64#645D64

#645D64 is a mid, near-neutral grey. Relative luminance 0.115; OKLCH L 48.7% C 0.014 H 325.8°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#645D64
RGB	rgb(100, 93, 100)
HSL	hsl(300, 4%, 38%)
HSV	hsv(300, 7%, 39%)
CMYK	cmyk(0%, 7%, 0%, 60.8%)
CIE-LAB	lab(40.34, 4.23, -2.98)
CIE-LCH	lch(40.34, 5.18, 324.80°)
OKLab	oklab(48.73% 0.0116 -0.0079)
OKLCH	oklch(48.73% 0.014 325.8)
XYZ	xyz(11.4698, 11.4582, 13.6615)
Luminance	0.1146 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645D64 #5D645D

analogous

#605D64 #645D64 #645D60

triadic

#645D64 #64645D #5D6464

tetradic

#645D64 #64605D #5D645D #5D6064

square

#645D64 #64605D #5D645D #5D6064

split-complementary

#645D64 #60645D #5D6460

monochromatic

#252225 #444044 #645D64 #847A84 #A19AA1

Accessibility & contrast

On white

6.38

#645D64 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#645D64 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645D64

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645D64	#FFFFFF	#000000	##FFFFFF
##645D64	1.00	6.38	3.29	6.38
#FFFFFF	6.38	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5F64

Deuteranopia (green-blind)

#5E5F64

Tritanopia (blue-blind)

#655E5F

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #645d64;
/* rgb */ color: rgb(100, 93, 100);
/* oklch */ color: oklch(48.7% 0.014 325.8);

Tailwind

colors: {
  custom: {
    50: '#908a90',
    500: '#645d64',
    950: '#000000',
  },
}

SCSS

$custom: #645d64;
$custom-light: #908a90;
$custom-dark: #000000;

JSON

{
  "hex": "#645d64",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 100
  },
  "hsl": {
    "h": 300,
    "s": 3.627,
    "l": 37.843
  },
  "oklch": {
    "l": 0.4873,
    "c": 0.01407,
    "h": 325.8
  },
  "luminance": 0.11458
}

Semantic roles & 50–950 ramp

primary

#645D64

secondary

#8C918C

accent

#AD7B7B

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0B0C

muted

#7D7C7D

Preview Lab

Preview with #645D64

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

Preview Lab → · Contrast checker → · Palette generator →