#645E5C#645E5C

#645E5C is a mid, near-neutral grey. Relative luminance 0.115; OKLCH L 48.7% C 0.008 H 39.4°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#645E5C
RGB	rgb(100, 94, 92)
HSL	hsl(15, 4%, 38%)
HSV	hsv(15, 8%, 39%)
CMYK	cmyk(0%, 6%, 8%, 60.8%)
CIE-LAB	lab(40.39, 2.00, 2.00)
CIE-LCH	lch(40.39, 2.83, 45.09°)
OKLab	oklab(48.69% 0.0065 0.0053)
OKLCH	oklch(48.69% 0.008 39.4)
XYZ	xyz(11.1898, 11.4876, 11.7510)
Luminance	0.1149 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E5C #5C6264

analogous

#645C5E #645E5C #64625C

triadic

#645E5C #5C645E #5E5C64

tetradic

#645E5C #5E645C #5C6264 #625C64

square

#645E5C #5E645C #5C6264 #625C64

split-complementary

#645E5C #5C6462 #5C5E64

monochromatic

#242221 #44403F #645E5C #847C79 #A19B99

Accessibility & contrast

On white

6.37

#645E5C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#645E5C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E5C

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E5C	#FFFFFF	#000000	##FFFFFF
##645E5C	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5F5C

Deuteranopia (green-blind)

#61605C

Tritanopia (blue-blind)

#665D5D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #645e5c;
/* rgb */ color: rgb(100, 94, 92);
/* oklch */ color: oklch(48.7% 0.008 39.4);

Tailwind

colors: {
  custom: {
    50: '#908b8a',
    500: '#645e5c',
    950: '#000000',
  },
}

SCSS

$custom: #645e5c;
$custom-light: #908b8a;
$custom-dark: #000000;

JSON

{
  "hex": "#645e5c",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 92
  },
  "hsl": {
    "h": 15,
    "s": 4.167,
    "l": 37.647
  },
  "oklch": {
    "l": 0.48688,
    "c": 0.00836,
    "h": 39.4
  },
  "luminance": 0.11487
}

Semantic roles & 50–950 ramp

primary

#645E5C

secondary

#8B9091

accent

#A1AD7A

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0C0B

muted

#7D7D7C

Preview Lab

Preview with #645E5C

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

Preview Lab → · Contrast checker → · Palette generator →