#646C84#646C84

#646C84 is a mid, muted blue. Relative luminance 0.151; OKLCH L 53.3% C 0.039 H 270.6°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#646C84
RGB	rgb(100, 108, 132)
HSL	hsl(225, 14%, 45%)
HSV	hsv(225, 24%, 52%)
CMYK	cmyk(24.2%, 18.2%, 0%, 48.2%)
CIE-LAB	lab(45.77, 2.63, -14.25)
CIE-LCH	lch(45.77, 14.49, 280.47°)
OKLab	oklab(53.34% 0.0004 -0.039)
OKLCH	oklch(53.34% 0.039 270.6)
XYZ	xyz(14.7819, 15.1000, 23.9611)
Luminance	0.1510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646C84 #847C64

analogous

#647C84 #646C84 #6C6484

triadic

#646C84 #84646C #6C8464

tetradic

#646C84 #84647C #847C64 #64846C

square

#646C84 #84647C #847C64 #64846C

split-complementary

#646C84 #846C64 #7C8464

monochromatic

#2F333E #4A5061 #646C84 #848BA2 #A6ACBC

Accessibility & contrast

On white

5.22

#646C84 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#646C84 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646C84

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646C84	#FFFFFF	#000000	##FFFFFF
##646C84	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656E85

Deuteranopia (green-blind)

#626B83

Tritanopia (blue-blind)

#5C7174

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #646c84;
/* rgb */ color: rgb(100, 108, 132);
/* oklch */ color: oklch(53.3% 0.039 270.6);

Tailwind

colors: {
  custom: {
    50: '#9096a7',
    500: '#646c84',
    950: '#000000',
  },
}

SCSS

$custom: #646c84;
$custom-light: #9096a7;
$custom-dark: #000000;

JSON

{
  "hex": "#646c84",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 132
  },
  "hsl": {
    "h": 225,
    "s": 13.793,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53341,
    "c": 0.03896,
    "h": 270.6
  },
  "luminance": 0.151
}

Semantic roles & 50–950 ramp

primary

#646C84

secondary

#ABA699

accent

#A571B7

background

#F8F9FA

surface

#F0F1F4

border

#CBCBCE

text

#0C0D0F

muted

#7D7E7F

Preview Lab

Preview with #646C84

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

Preview Lab → · Contrast checker → · Palette generator →