#646D63#646D63

#646D63 is a mid, near-neutral grey. Relative luminance 0.145; OKLCH L 52.4% C 0.019 H 142.5°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#646D63
RGB	rgb(100, 109, 99)
HSL	hsl(114, 5%, 41%)
HSV	hsv(114, 9%, 43%)
CMYK	cmyk(8.3%, 0%, 9.2%, 57.3%)
CIE-LAB	lab(45.01, -5.51, 4.42)
CIE-LCH	lch(45.01, 7.06, 141.27°)
OKLab	oklab(52.39% -0.015 0.0115)
OKLCH	oklch(52.39% 0.019 142.5)
XYZ	xyz(12.9759, 14.5473, 13.9263)
Luminance	0.1455 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D63 #6C636D

analogous

#696D63 #646D63 #636D67

triadic

#646D63 #63646D #6D6364

tetradic

#646D63 #63696D #6C636D #6D6763

square

#646D63 #63696D #6C636D #6D6763

split-complementary

#646D63 #67636D #6D6369

monochromatic

#292D29 #474D46 #646D63 #828C81 #A2AAA1

Accessibility & contrast

On white

5.37

#646D63 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#646D63 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D63

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D63	#FFFFFF	#000000	##FFFFFF
##646D63	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)

#6E6B62

Deuteranopia (green-blind)

#6C6A63

Tritanopia (blue-blind)

#636C6A

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #646d63;
/* rgb */ color: rgb(100, 109, 99);
/* oklch */ color: oklch(52.4% 0.019 142.5);

Tailwind

colors: {
  custom: {
    50: '#90968f',
    500: '#646d63',
    950: '#000000',
  },
}

SCSS

$custom: #646d63;
$custom-light: #90968f;
$custom-dark: #000000;

JSON

{
  "hex": "#646d63",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 99
  },
  "hsl": {
    "h": 114,
    "s": 4.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.52391,
    "c": 0.01892,
    "h": 142.5
  },
  "luminance": 0.14547
}

Semantic roles & 50–950 ramp

primary

#646D63

secondary

#999299

accent

#7AAEA9

background

#F8F9F8

surface

#F0F2F0

border

#CBCCCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #646D63

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

Preview Lab → · Contrast checker → · Palette generator →