#646670#646670

#646670 is a mid, near-neutral grey. Relative luminance 0.134; OKLCH L 51.2% C 0.016 H 276.8°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#646670
RGB	rgb(100, 102, 112)
HSL	hsl(230, 6%, 42%)
HSV	hsv(230, 11%, 44%)
CMYK	cmyk(10.7%, 8.9%, 0%, 56.1%)
CIE-LAB	lab(43.33, 1.41, -5.88)
CIE-LCH	lch(43.33, 6.04, 283.52°)
OKLab	oklab(51.2% 0.0019 -0.0158)
OKLCH	oklch(51.2% 0.016 276.8)
XYZ	xyz(12.9309, 13.3818, 17.2278)
Luminance	0.1338 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646670 #706E64

analogous

#646C70 #646670 #686470

triadic

#646670 #706466 #667064

tetradic

#646670 #70646C #706E64 #647068

square

#646670 #70646C #706E64 #647068

split-complementary

#646670 #706864 #6C7064

monochromatic

#2A2B2F #474950 #646670 #82848F #A2A4AC

Accessibility & contrast

On white

5.71

#646670 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#646670 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646670

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646670	#FFFFFF	#000000	##FFFFFF
##646670	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636770

Deuteranopia (green-blind)

#636670

Tritanopia (blue-blind)

#626869

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #646670;
/* rgb */ color: rgb(100, 102, 112);
/* oklch */ color: oklch(51.2% 0.016 276.8);

Tailwind

colors: {
  custom: {
    50: '#909199',
    500: '#646670',
    950: '#000000',
  },
}

SCSS

$custom: #646670;
$custom-light: #909199;
$custom-dark: #000000;

JSON

{
  "hex": "#646670",
  "rgb": {
    "r": 100,
    "g": 102,
    "b": 112
  },
  "hsl": {
    "h": 230,
    "s": 5.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.51199,
    "c": 0.01591,
    "h": 276.8
  },
  "luminance": 0.13382
}

Semantic roles & 50–950 ramp

primary

#646670

secondary

#9C9B94

accent

#A679AF

background

#F8F8F9

surface

#F0F0F2

border

#CBCBCC

text

#0C0C0D

muted

#7D7D7E

Preview Lab

Preview with #646670

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

Preview Lab → · Contrast checker → · Palette generator →