#646CA4#646CA4

#646CA4 is a mid, moderate blue. Relative luminance 0.161; OKLCH L 54.8% C 0.088 H 276.9°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#646CA4
RGB	rgb(100, 108, 164)
HSL	hsl(233, 26%, 52%)
HSV	hsv(233, 39%, 64%)
CMYK	cmyk(39%, 34.1%, 0%, 35.7%)
CIE-LAB	lab(47.12, 11.37, -31.12)
CIE-LCH	lch(47.12, 33.13, 290.06°)
OKLab	oklab(54.84% 0.0105 -0.0871)
OKLCH	oklch(54.84% 0.088 276.9)
XYZ	xyz(17.3170, 16.1141, 37.3127)
Luminance	0.1611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CA4 #A49C64

analogous

#648CA4 #646CA4 #7C64A4

triadic

#646CA4 #A4646C #6CA464

tetradic

#646CA4 #A4648C #A49C64 #64A47C

square

#646CA4 #A4648C #A49C64 #64A47C

split-complementary

#646CA4 #A47C64 #8CA464

monochromatic

#343959 #4B5280 #646CA4 #8B91BB #B1B5D1

Accessibility & contrast

On white

4.97

#646CA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#646CA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CA4

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CA4	#FFFFFF	#000000	##FFFFFF
##646CA4	1.00	4.97	4.22	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A72A6

Deuteranopia (green-blind)

#556DA3

Tritanopia (blue-blind)

#517780

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #646ca4;
/* rgb */ color: rgb(100, 108, 164);
/* oklch */ color: oklch(54.8% 0.088 276.9);

Tailwind

colors: {
  custom: {
    50: '#9296bf',
    500: '#646ca4',
    950: '#000000',
  },
}

SCSS

$custom: #646ca4;
$custom-light: #9296bf;
$custom-dark: #000000;

JSON

{
  "hex": "#646ca4",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 164
  },
  "hsl": {
    "h": 232.5,
    "s": 26.016,
    "l": 51.765
  },
  "oklch": {
    "l": 0.54837,
    "c": 0.08772,
    "h": 276.9
  },
  "luminance": 0.16115
}

Semantic roles & 50–950 ramp

primary

#646CA4

secondary

#C0BCA4

accent

#B765C2

background

#F9F9FB

surface

#F1F1F7

border

#CBCBD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646CA4

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

Preview Lab → · Contrast checker → · Palette generator →