#646B60#646B60

#646B60 is a mid, near-neutral grey. Relative luminance 0.141; OKLCH L 51.8% C 0.019 H 133.9°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#646B60
RGB	rgb(100, 107, 96)
HSL	hsl(98, 5%, 40%)
HSV	hsv(98, 10%, 42%)
CMYK	cmyk(6.5%, 0%, 10.3%, 58%)
CIE-LAB	lab(44.33, -4.94, 5.25)
CIE-LCH	lch(44.33, 7.21, 133.28°)
OKLab	oklab(51.83% -0.0132 0.0137)
OKLCH	oklch(51.83% 0.019 133.9)
XYZ	xyz(12.6242, 14.0692, 13.1146)
Luminance	0.1407 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646B60 #67606B

analogous

#6A6B60 #646B60 #606B62

triadic

#646B60 #60646B #6B6064

tetradic

#646B60 #606A6B #67606B #6B6260

square

#646B60 #606A6B #67606B #6B6260

split-complementary

#646B60 #62606B #6B606A

monochromatic

#282A26 #464B43 #646B60 #828B7D #A1A89E

Accessibility & contrast

On white

5.51

#646B60 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#646B60 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646B60

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646B60	#FFFFFF	#000000	##FFFFFF
##646B60	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C695F

Deuteranopia (green-blind)

#6B6960

Tritanopia (blue-blind)

#646A68

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #646b60;
/* rgb */ color: rgb(100, 107, 96);
/* oklch */ color: oklch(51.8% 0.019 133.9);

Tailwind

colors: {
  custom: {
    50: '#90958d',
    500: '#646b60',
    950: '#000000',
  },
}

SCSS

$custom: #646b60;
$custom-light: #90958d;
$custom-dark: #000000;

JSON

{
  "hex": "#646b60",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 96
  },
  "hsl": {
    "h": 98.182,
    "s": 5.419,
    "l": 39.804
  },
  "oklch": {
    "l": 0.5183,
    "c": 0.019,
    "h": 133.9
  },
  "luminance": 0.14069
}

Semantic roles & 50–950 ramp

primary

#646B60

secondary

#958F97

accent

#79AF9B

background

#F8F9F8

surface

#F0F1F0

border

#CBCBCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #646B60

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

Preview Lab → · Contrast checker → · Palette generator →