#645C5A#645C5A

#645C5A is a mid, near-neutral grey. Relative luminance 0.111; OKLCH L 48.2% C 0.011 H 34.3°. Best body text is #FFFFFF at 6.52:1 contrast (WCAG AA passes).

Color values

HEX	#645C5A
RGB	rgb(100, 92, 90)
HSL	hsl(12, 5%, 37%)
HSV	hsv(12, 10%, 39%)
CMYK	cmyk(0%, 8%, 10%, 60.8%)
CIE-LAB	lab(39.75, 2.82, 2.31)
CIE-LCH	lch(39.75, 3.64, 39.30°)
OKLab	oklab(48.17% 0.009 0.0061)
OKLCH	oklch(48.17% 0.011 34.3)
XYZ	xyz(10.9280, 11.1020, 11.2381)
Luminance	0.1110 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C5A #5A6264

analogous

#645A5D #645C5A #64615A

triadic

#645C5A #5A645C #5C5A64

tetradic

#645C5A #5D645A #5A6264 #615A64

square

#645C5A #5D645A #5A6264 #615A64

split-complementary

#645C5A #5A6461 #5A5D64

monochromatic

#242120 #443E3D #645C5A #847A77 #A19997

Accessibility & contrast

On white

6.52

#645C5A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#645C5A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C5A

6.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C5A	#FFFFFF	#000000	##FFFFFF
##645C5A	1.00	6.52	3.22	6.52
#FFFFFF	6.52	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5D5A

Deuteranopia (green-blind)

#5F5E5A

Tritanopia (blue-blind)

#665B5B

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #645c5a;
/* rgb */ color: rgb(100, 92, 90);
/* oklch */ color: oklch(48.2% 0.011 34.3);

Tailwind

colors: {
  custom: {
    50: '#908a88',
    500: '#645c5a',
    950: '#000000',
  },
}

SCSS

$custom: #645c5a;
$custom-light: #908a88;
$custom-dark: #000000;

JSON

{
  "hex": "#645c5a",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 90
  },
  "hsl": {
    "h": 12,
    "s": 5.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.48169,
    "c": 0.01086,
    "h": 34.3
  },
  "luminance": 0.11102
}

Semantic roles & 50–950 ramp

primary

#645C5A

secondary

#898F91

accent

#A4AE79

background

#F8F8F8

surface

#F0F0EF

border

#CBCBCA

text

#0C0B0B

muted

#7D7C7C

Preview Lab

Preview with #645C5A

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

Preview Lab → · Contrast checker → · Palette generator →