#646DAC#646DAC

#646DAC is a mid, moderate blue. Relative luminance 0.166; OKLCH L 55.5% C 0.098 H 276.5°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#646DAC
RGB	rgb(100, 109, 172)
HSL	hsl(233, 30%, 53%)
HSV	hsv(233, 42%, 67%)
CMYK	cmyk(41.9%, 36.6%, 0%, 32.5%)
CIE-LAB	lab(47.78, 13.10, -34.77)
CIE-LCH	lch(47.78, 37.16, 290.64°)
OKLab	oklab(55.47% 0.0112 -0.0977)
OKLCH	oklch(55.47% 0.098 276.5)
XYZ	xyz(18.1683, 16.6243, 41.2732)
Luminance	0.1663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DAC #ACA364

analogous

#6491AC #646DAC #7F64AC

triadic

#646DAC #AC646D #6DAC64

tetradic

#646DAC #AC6491 #ACA364 #64AC7F

square

#646DAC #AC6491 #ACA364 #64AC7F

split-complementary

#646DAC #AC7F64 #91AC64

monochromatic

#343A61 #4A5189 #646DAC #8C93C1 #B4B8D7

Accessibility & contrast

On white

4.86

#646DAC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#646DAC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DAC

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DAC	#FFFFFF	#000000	##FFFFFF
##646DAC	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5774AF

Deuteranopia (green-blind)

#526FAB

Tritanopia (blue-blind)

#4D7A84

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646dac;
/* rgb */ color: rgb(100, 109, 172);
/* oklch */ color: oklch(55.5% 0.098 276.5);

Tailwind

colors: {
  custom: {
    50: '#9396c5',
    500: '#646dac',
    950: '#000000',
  },
}

SCSS

$custom: #646dac;
$custom-light: #9396c5;
$custom-dark: #000000;

JSON

{
  "hex": "#646dac",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 172
  },
  "hsl": {
    "h": 232.5,
    "s": 30.252,
    "l": 53.333
  },
  "oklch": {
    "l": 0.55472,
    "c": 0.09829,
    "h": 276.5
  },
  "luminance": 0.16625
}

Semantic roles & 50–950 ramp

primary

#646DAC

secondary

#C5C2A6

accent

#BA61C6

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646DAC

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

Preview Lab → · Contrast checker → · Palette generator →