#646D64#646D64

#646D64 is a mid, near-neutral grey. Relative luminance 0.146; OKLCH L 52.4% C 0.018 H 145.3°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#646D64
RGB	rgb(100, 109, 100)
HSL	hsl(120, 4%, 41%)
HSV	hsv(120, 8%, 43%)
CMYK	cmyk(8.3%, 0%, 8.3%, 57.3%)
CIE-LAB	lab(45.03, -5.31, 3.86)
CIE-LCH	lch(45.03, 6.56, 143.99°)
OKLab	oklab(52.42% -0.0145 0.0101)
OKLCH	oklch(52.42% 0.018 145.3)
XYZ	xyz(13.0240, 14.5666, 14.1796)
Luminance	0.1457 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D64 #6D646D

analogous

#686D64 #646D64 #646D68

triadic

#646D64 #64646D #6D6464

tetradic

#646D64 #64686D #6D646D #6D6864

square

#646D64 #64686D #6D646D #6D6864

split-complementary

#646D64 #68646D #6D6468

monochromatic

#292D29 #474D47 #646D64 #828C82 #A2AAA2

Accessibility & contrast

On white

5.37

#646D64 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#646D64 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D64

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D64	#FFFFFF	#000000	##FFFFFF
##646D64	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D6B64

Deuteranopia (green-blind)

#6C6A64

Tritanopia (blue-blind)

#636C6A

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #646d64;
/* rgb */ color: rgb(100, 109, 100);
/* oklch */ color: oklch(52.4% 0.018 145.3);

Tailwind

colors: {
  custom: {
    50: '#909690',
    500: '#646d64',
    950: '#000000',
  },
}

SCSS

$custom: #646d64;
$custom-light: #909690;
$custom-dark: #000000;

JSON

{
  "hex": "#646d64",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 100
  },
  "hsl": {
    "h": 120,
    "s": 4.306,
    "l": 40.98
  },
  "oklch": {
    "l": 0.52421,
    "c": 0.01769,
    "h": 145.3
  },
  "luminance": 0.14567
}

Semantic roles & 50–950 ramp

primary

#646D64

secondary

#9A939A

accent

#7AADAD

background

#F8F9F8

surface

#F0F2F0

border

#CBCCCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #646D64

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

Preview Lab → · Contrast checker → · Palette generator →