#645E5A#645E5A

#645E5A is a mid, near-neutral grey. Relative luminance 0.115; OKLCH L 48.6% C 0.010 H 56.2°. Best body text is #FFFFFF at 6.38:1 contrast (WCAG AA passes).

Color values

HEX	#645E5A
RGB	rgb(100, 94, 90)
HSL	hsl(24, 5%, 37%)
HSV	hsv(24, 10%, 39%)
CMYK	cmyk(0%, 6%, 10%, 60.8%)
CIE-LAB	lab(40.33, 1.61, 3.15)
CIE-LCH	lch(40.33, 3.54, 62.95°)
OKLab	oklab(48.63% 0.0056 0.0083)
OKLCH	oklch(48.63% 0.01 56.2)
XYZ	xyz(11.1035, 11.4531, 11.2966)
Luminance	0.1145 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E5A #5A6064

analogous

#645A5B #645E5A #64635A

triadic

#645E5A #5A645E #5E5A64

tetradic

#645E5A #5B645A #5A6064 #635A64

square

#645E5A #5B645A #5A6064 #635A64

split-complementary

#645E5A #5A6463 #5A5B64

monochromatic

#242120 #44403D #645E5A #847C77 #A19B97

Accessibility & contrast

On white

6.38

#645E5A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#645E5A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E5A

6.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E5A	#FFFFFF	#000000	##FFFFFF
##645E5A	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)

#605E5A

Deuteranopia (green-blind)

#61605A

Tritanopia (blue-blind)

#665D5D

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #645e5a;
/* rgb */ color: rgb(100, 94, 90);
/* oklch */ color: oklch(48.6% 0.010 56.2);

Tailwind

colors: {
  custom: {
    50: '#908b88',
    500: '#645e5a',
    950: '#000000',
  },
}

SCSS

$custom: #645e5a;
$custom-light: #908b88;
$custom-dark: #000000;

JSON

{
  "hex": "#645e5a",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 90
  },
  "hsl": {
    "h": 24,
    "s": 5.263,
    "l": 37.255
  },
  "oklch": {
    "l": 0.48625,
    "c": 0.00999,
    "h": 56.2
  },
  "luminance": 0.11453
}

Semantic roles & 50–950 ramp

primary

#645E5A

secondary

#898E91

accent

#99AE79

background

#F8F8F8

surface

#F0F0EF

border

#CBCBCA

text

#0C0C0B

muted

#7D7D7C

Preview Lab

Preview with #645E5A

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

Preview Lab → · Contrast checker → · Palette generator →