#645C56#645C56

#645C56 is a mid, near-neutral grey. Relative luminance 0.110; OKLCH L 48.0% C 0.014 H 59.3°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#645C56
RGB	rgb(100, 92, 86)
HSL	hsl(26, 8%, 36%)
HSV	hsv(26, 14%, 39%)
CMYK	cmyk(0%, 8%, 14%, 60.8%)
CIE-LAB	lab(39.64, 2.06, 4.61)
CIE-LCH	lch(39.64, 5.05, 65.88°)
OKLab	oklab(48.05% 0.0072 0.0121)
OKLCH	oklch(48.05% 0.014 59.3)
XYZ	xyz(10.7623, 11.0357, 10.3654)
Luminance	0.1104 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645C56 #565E64

analogous

#645657 #645C56 #646356

triadic

#645C56 #56645C #5C5664

tetradic

#645C56 #576456 #565E64 #635664

square

#645C56 #576456 #565E64 #635664

split-complementary

#645C56 #566463 #565764

monochromatic

#221F1D #433E3A #645C56 #857A72 #A29993

Accessibility & contrast

On white

6.55

#645C56 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#645C56 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645C56

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645C56	#FFFFFF	#000000	##FFFFFF
##645C56	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5C56

Deuteranopia (green-blind)

#605E56

Tritanopia (blue-blind)

#675A5A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #645c56;
/* rgb */ color: rgb(100, 92, 86);
/* oklch */ color: oklch(48.0% 0.014 59.3);

Tailwind

colors: {
  custom: {
    50: '#908a85',
    500: '#645c56',
    950: '#000000',
  },
}

SCSS

$custom: #645c56;
$custom-light: #908a85;
$custom-dark: #000000;

JSON

{
  "hex": "#645c56",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 86
  },
  "hsl": {
    "h": 25.714,
    "s": 7.527,
    "l": 36.471
  },
  "oklch": {
    "l": 0.48045,
    "c": 0.01405,
    "h": 59.3
  },
  "luminance": 0.11036
}

Semantic roles & 50–950 ramp

primary

#645C56

secondary

#858C91

accent

#98B177

background

#F8F8F8

surface

#F0F0EF

border

#CBCBCA

text

#0C0B0B

muted

#7D7C7C

Preview Lab

Preview with #645C56

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

Preview Lab → · Contrast checker → · Palette generator →