#645A56#645A56

#645A56 is a mid, near-neutral grey. Relative luminance 0.107; OKLCH L 47.6% C 0.015 H 43.1°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#645A56
RGB	rgb(100, 90, 86)
HSL	hsl(17, 8%, 36%)
HSV	hsv(17, 14%, 39%)
CMYK	cmyk(0%, 10%, 14%, 60.8%)
CIE-LAB	lab(39.06, 3.28, 3.78)
CIE-LCH	lch(39.06, 5.00, 49.03°)
OKLab	oklab(47.59% 0.0106 0.0099)
OKLCH	oklch(47.59% 0.015 43.1)
XYZ	xyz(10.5913, 10.6937, 10.3085)
Luminance	0.1069 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645A56 #566064

analogous

#645659 #645A56 #646156

triadic

#645A56 #56645A #5A5664

tetradic

#645A56 #596456 #566064 #615664

square

#645A56 #596456 #566064 #615664

split-complementary

#645A56 #566461 #565964

monochromatic

#221F1D #433C3A #645A56 #857872 #A29793

Accessibility & contrast

On white

6.69

#645A56 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#645A56 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645A56

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645A56	#FFFFFF	#000000	##FFFFFF
##645A56	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5B56

Deuteranopia (green-blind)

#5F5D56

Tritanopia (blue-blind)

#675959

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #645a56;
/* rgb */ color: rgb(100, 90, 86);
/* oklch */ color: oklch(47.6% 0.015 43.1);

Tailwind

colors: {
  custom: {
    50: '#908885',
    500: '#645a56',
    950: '#000000',
  },
}

SCSS

$custom: #645a56;
$custom-light: #908885;
$custom-dark: #000000;

JSON

{
  "hex": "#645a56",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 86
  },
  "hsl": {
    "h": 17.143,
    "s": 7.527,
    "l": 36.471
  },
  "oklch": {
    "l": 0.4759,
    "c": 0.01454,
    "h": 43.1
  },
  "luminance": 0.10694
}

Semantic roles & 50–950 ramp

primary

#645A56

secondary

#858E91

accent

#A0B177

background

#F8F8F8

surface

#F0EFEF

border

#CBCACA

text

#0C0B0B

muted

#7D7C7C

Preview Lab

Preview with #645A56

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

Preview Lab → · Contrast checker → · Palette generator →