#645E68#645E68

#645E68 is a mid, near-neutral grey. Relative luminance 0.117; OKLCH L 49.1% C 0.017 H 312.1°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#645E68
RGB	rgb(100, 94, 104)
HSL	hsl(276, 5%, 39%)
HSV	hsv(276, 10%, 41%)
CMYK	cmyk(3.8%, 9.6%, 0%, 59.2%)
CIE-LAB	lab(40.76, 4.48, -4.82)
CIE-LCH	lch(40.76, 6.58, 312.86°)
OKLab	oklab(49.1% 0.0116 -0.0129)
OKLCH	oklch(49.1% 0.017 312.1)
XYZ	xyz(11.7565, 11.7143, 14.7357)
Luminance	0.1171 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E68 #62685E

analogous

#5F5E68 #645E68 #685E67

triadic

#645E68 #68645E #5E6864

tetradic

#645E68 #685F5E #62685E #5E6768

square

#645E68 #685F5E #62685E #5E6768

split-complementary

#645E68 #67685E #5E685F

monochromatic

#262428 #454148 #645E68 #837B88 #A19BA5

Accessibility & contrast

On white

6.28

#645E68 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#645E68 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E68

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E68	#FFFFFF	#000000	##FFFFFF
##645E68	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D6068

Deuteranopia (green-blind)

#5E6068

Tritanopia (blue-blind)

#645F61

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #645e68;
/* rgb */ color: rgb(100, 94, 104);
/* oklch */ color: oklch(49.1% 0.017 312.1);

Tailwind

colors: {
  custom: {
    50: '#908b93',
    500: '#645e68',
    950: '#000000',
  },
}

SCSS

$custom: #645e68;
$custom-light: #908b93;
$custom-dark: #000000;

JSON

{
  "hex": "#645e68",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 104
  },
  "hsl": {
    "h": 276,
    "s": 5.051,
    "l": 38.824
  },
  "oklch": {
    "l": 0.49098,
    "c": 0.01736,
    "h": 312.1
  },
  "luminance": 0.11714
}

Semantic roles & 50–950 ramp

primary

#645E68

secondary

#90958D

accent

#AE7A8F

background

#F8F8F9

surface

#F0F0F1

border

#CBCBCB

text

#0C0C0D

muted

#7D7D7E

Preview Lab

Preview with #645E68

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

Preview Lab → · Contrast checker → · Palette generator →