#646558#646558

#646558 is a mid, muted grey. Relative luminance 0.127; OKLCH L 50.2% C 0.020 H 110.7°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#646558
RGB	rgb(100, 101, 88)
HSL	hsl(65, 7%, 37%)
HSV	hsv(65, 13%, 40%)
CMYK	cmyk(1%, 0%, 12.9%, 60.4%)
CIE-LAB	lab(42.34, -2.95, 7.24)
CIE-LCH	lch(42.34, 7.82, 112.18°)
OKLab	oklab(50.19% -0.0071 0.0188)
OKLCH	oklch(50.19% 0.02 110.7)
XYZ	xyz(11.6705, 12.7213, 11.0713)
Luminance	0.1272 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646558 #595865

analogous

#656058 #646558 #5E6558

triadic

#646558 #586465 #655864

tetradic

#646558 #586560 #595865 #65585E

square

#646558 #586560 #595865 #65585E

split-complementary

#646558 #585E65 #605865

monochromatic

#23241F #44443C #646558 #848674 #A1A395

Accessibility & contrast

On white

5.93

#646558 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#646558 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646558

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646558	#FFFFFF	#000000	##FFFFFF
##646558	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#676457

Deuteranopia (green-blind)

#676458

Tritanopia (blue-blind)

#666361

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #646558;
/* rgb */ color: rgb(100, 101, 88);
/* oklch */ color: oklch(50.2% 0.020 110.7);

Tailwind

colors: {
  custom: {
    50: '#909087',
    500: '#646558',
    950: '#000000',
  },
}

SCSS

$custom: #646558;
$custom-light: #909087;
$custom-dark: #000000;

JSON

{
  "hex": "#646558",
  "rgb": {
    "r": 100,
    "g": 101,
    "b": 88
  },
  "hsl": {
    "h": 64.615,
    "s": 6.878,
    "l": 37.059
  },
  "oklch": {
    "l": 0.50187,
    "c": 0.02006,
    "h": 110.7
  },
  "luminance": 0.12721
}

Semantic roles & 50–950 ramp

primary

#646558

secondary

#888792

accent

#78B07C

background

#F8F8F8

surface

#F0F0EF

border

#CBCBCA

text

#0C0C0B

muted

#7D7D7C

Preview Lab

Preview with #646558

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

Preview Lab → · Contrast checker → · Palette generator →