#646C6E#646C6E

#646C6E is a mid, near-neutral grey. Relative luminance 0.146; OKLCH L 52.5% C 0.010 H 214.4°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#646C6E
RGB	rgb(100, 108, 110)
HSL	hsl(192, 5%, 41%)
HSV	hsv(192, 9%, 43%)
CMYK	cmyk(9.1%, 1.8%, 0%, 56.9%)
CIE-LAB	lab(45.03, -2.60, -2.16)
CIE-LCH	lch(45.03, 3.39, 219.72°)
OKLab	oklab(52.51% -0.0085 -0.0058)
OKLCH	oklch(52.51% 0.01 214.4)
XYZ	xyz(13.4320, 14.5601, 16.8515)
Luminance	0.1456 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C6E #6E6664

analogous

#646E6B #646C6E #64676E

triadic

#646C6E #6E646C #6C6E64

tetradic

#646C6E #6B646E #6E6664 #676E64

square

#646C6E #6B646E #6E6664 #676E64

split-complementary

#646C6E #6E6467 #6E6B64

monochromatic

#2A2D2E #474D4E #646C6E #828B8D #A2A9AA

Accessibility & contrast

On white

5.37

#646C6E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#646C6E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C6E

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C6E	#FFFFFF	#000000	##FFFFFF
##646C6E	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)

#6A6B6E

Deuteranopia (green-blind)

#696A6E

Tritanopia (blue-blind)

#616D6D

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #646c6e;
/* rgb */ color: rgb(100, 108, 110);
/* oklch */ color: oklch(52.5% 0.010 214.4);

Tailwind

colors: {
  custom: {
    50: '#909697',
    500: '#646c6e',
    950: '#000000',
  },
}

SCSS

$custom: #646c6e;
$custom-light: #909697;
$custom-dark: #000000;

JSON

{
  "hex": "#646c6e",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 110
  },
  "hsl": {
    "h": 192,
    "s": 4.762,
    "l": 41.176
  },
  "oklch": {
    "l": 0.52509,
    "c": 0.0103,
    "h": 214.4
  },
  "luminance": 0.1456
}

Semantic roles & 50–950 ramp

primary

#646C6E

secondary

#9A9593

accent

#847AAE

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #646C6E

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

Preview Lab → · Contrast checker → · Palette generator →