#646D89#646D89

#646D89 is a mid, muted blue. Relative luminance 0.155; OKLCH L 53.8% C 0.045 H 270.9°. Best body text is #FFFFFF at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#646D89
RGB	rgb(100, 109, 137)
HSL	hsl(225, 16%, 46%)
HSV	hsv(225, 27%, 54%)
CMYK	cmyk(27%, 20.4%, 0%, 46.3%)
CIE-LAB	lab(46.25, 3.32, -16.50)
CIE-LCH	lch(46.25, 16.83, 281.36°)
OKLab	oklab(53.78% 0.0007 -0.0453)
OKLCH	oklch(53.78% 0.045 270.9)
XYZ	xyz(15.2383, 15.4523, 25.8418)
Luminance	0.1545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646D89 #898064

analogous

#648089 #646D89 #6E6489

triadic

#646D89 #89646D #6D8964

tetradic

#646D89 #896480 #898064 #64896E

square

#646D89 #896480 #898064 #64896E

split-complementary

#646D89 #896E64 #808964

monochromatic

#303542 #4A5166 #646D89 #858DA6 #A8AEBF

Accessibility & contrast

On white

5.13

#646D89 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.09

#646D89 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646D89

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646D89	#FFFFFF	#000000	##FFFFFF
##646D89	1.00	5.13	4.09	5.13
#FFFFFF	5.13	1.00	21.00	1.00
#000000	4.09	21.00	1.00	21.00
##FFFFFF	5.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656F8A

Deuteranopia (green-blind)

#626C88

Tritanopia (blue-blind)

#5B7276

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #646d89;
/* rgb */ color: rgb(100, 109, 137);
/* oklch */ color: oklch(53.8% 0.045 270.9);

Tailwind

colors: {
  custom: {
    50: '#9196ab',
    500: '#646d89',
    950: '#000000',
  },
}

SCSS

$custom: #646d89;
$custom-light: #9196ab;
$custom-dark: #000000;

JSON

{
  "hex": "#646d89",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 137
  },
  "hsl": {
    "h": 225.405,
    "s": 15.612,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53776,
    "c": 0.04532,
    "h": 270.9
  },
  "luminance": 0.15453
}

Semantic roles & 50–950 ramp

primary

#646D89

secondary

#AEA99B

accent

#A76FB8

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0C0D10

muted

#7D7E7F

Preview Lab

Preview with #646D89

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

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