#646366#646366

#646366 is a mid, near-neutral grey. Relative luminance 0.126; OKLCH L 50.2% C 0.005 H 301.4°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#646366
RGB	rgb(100, 99, 102)
HSL	hsl(260, 1%, 39%)
HSV	hsv(260, 3%, 40%)
CMYK	cmyk(2%, 2.9%, 0%, 60%)
CIE-LAB	lab(42.14, 1.02, -1.56)
CIE-LCH	lch(42.14, 1.86, 303.19°)
OKLab	oklab(50.16% 0.0025 -0.0041)
OKLCH	oklch(50.16% 0.005 301.4)
XYZ	xyz(12.1152, 12.5923, 14.3601)
Luminance	0.1259 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646366 #656663

analogous

#636466 #646366 #666366

triadic

#646366 #666463 #636664

tetradic

#646366 #666364 #656663 #636666

square

#646366 #666364 #656663 #636666

split-complementary

#646366 #666663 #646663

monochromatic

#272728 #464547 #646366 #828185 #A1A0A3

Accessibility & contrast

On white

5.97

#646366 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#646366 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646366

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646366	#FFFFFF	#000000	##FFFFFF
##646366	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636366

Deuteranopia (green-blind)

#636366

Tritanopia (blue-blind)

#646364

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #646366;
/* rgb */ color: rgb(100, 99, 102);
/* oklch */ color: oklch(50.2% 0.005 301.4);

Tailwind

colors: {
  custom: {
    50: '#908f91',
    500: '#646366',
    950: '#000000',
  },
}

SCSS

$custom: #646366;
$custom-light: #908f91;
$custom-dark: #000000;

JSON

{
  "hex": "#646366",
  "rgb": {
    "r": 100,
    "g": 99,
    "b": 102
  },
  "hsl": {
    "h": 260,
    "s": 1.493,
    "l": 39.412
  },
  "oklch": {
    "l": 0.5016,
    "c": 0.00484,
    "h": 301.4
  },
  "luminance": 0.12592
}

Semantic roles & 50–950 ramp

primary

#646366

secondary

#939491

accent

#AB7D9C

background

#F8F8F8

surface

#F0F0F0

border

#CBCBCB

text

#0C0C0C

muted

#7D7D7D

Preview Lab

Preview with #646366

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

Preview Lab → · Contrast checker → · Palette generator →