#645858#645858

#645858 is a mid, near-neutral grey. Relative luminance 0.104; OKLCH L 47.2% C 0.016 H 17.7°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#645858
RGB	rgb(100, 88, 88)
HSL	hsl(0, 6%, 37%)
HSV	hsv(0, 12%, 39%)
CMYK	cmyk(0%, 12%, 12%, 60.8%)
CIE-LAB	lab(38.54, 4.88, 1.79)
CIE-LCH	lch(38.54, 5.20, 20.14°)
OKLab	oklab(47.2% 0.015 0.0048)
OKLCH	oklch(47.2% 0.016 17.7)
XYZ	xyz(10.5066, 10.3936, 10.6833)
Luminance	0.1039 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645858 #586464

analogous

#64585E #645858 #645E58

triadic

#645858 #586458 #585864

tetradic

#645858 #5E6458 #586464 #5E5864

square

#645858 #5E6458 #586464 #5E5864

split-complementary

#645858 #58645E #585E64

monochromatic

#231F1F #433B3B #645858 #857575 #A29595

Accessibility & contrast

On white

6.82

#645858 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#645858 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645858

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645858	#FFFFFF	#000000	##FFFFFF
##645858	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5958

Deuteranopia (green-blind)

#5D5C58

Tritanopia (blue-blind)

#675758

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #645858;
/* rgb */ color: rgb(100, 88, 88);
/* oklch */ color: oklch(47.2% 0.016 17.7);

Tailwind

colors: {
  custom: {
    50: '#908787',
    500: '#645858',
    950: '#000000',
  },
}

SCSS

$custom: #645858;
$custom-light: #908787;
$custom-dark: #000000;

JSON

{
  "hex": "#645858",
  "rgb": {
    "r": 100,
    "g": 88,
    "b": 88
  },
  "hsl": {
    "h": 0,
    "s": 6.383,
    "l": 36.863
  },
  "oklch": {
    "l": 0.47202,
    "c": 0.01571,
    "h": 17.7
  },
  "luminance": 0.10393
}

Semantic roles & 50–950 ramp

primary

#645858

secondary

#879191

accent

#AFAF78

background

#F8F8F8

surface

#F0EFEF

border

#CBCACA

text

#0C0B0B

muted

#7D7C7C

Preview Lab

Preview with #645858

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

Preview Lab → · Contrast checker → · Palette generator →