#646DAD#646DAD

#646DAD is a mid, moderate blue. Relative luminance 0.167; OKLCH L 55.5% C 0.100 H 276.6°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#646DAD
RGB	rgb(100, 109, 173)
HSL	hsl(233, 31%, 54%)
HSV	hsv(233, 42%, 68%)
CMYK	cmyk(42.2%, 37%, 0%, 32.2%)
CIE-LAB	lab(47.83, 13.39, -35.28)
CIE-LCH	lch(47.83, 37.74, 290.79°)
OKLab	oklab(55.53% 0.0114 -0.0991)
OKLCH	oklch(55.53% 0.1 276.6)
XYZ	xyz(18.2647, 16.6629, 41.7809)
Luminance	0.1666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DAD #ADA464

analogous

#6491AD #646DAD #7F64AD

triadic

#646DAD #AD646D #6DAD64

tetradic

#646DAD #AD6491 #ADA464 #64AD7F

square

#646DAD #AD6491 #ADA464 #64AD7F

split-complementary

#646DAD #AD7F64 #91AD64

monochromatic

#343A62 #49518B #646DAD #8C93C2 #B4B8D7

Accessibility & contrast

On white

4.85

#646DAD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#646DAD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646DAD

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DAD	#FFFFFF	#000000	##FFFFFF
##646DAD	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5775B0

Deuteranopia (green-blind)

#516FAC

Tritanopia (blue-blind)

#4D7A85

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646dad;
/* rgb */ color: rgb(100, 109, 173);
/* oklch */ color: oklch(55.5% 0.100 276.6);

Tailwind

colors: {
  custom: {
    50: '#9396c6',
    500: '#646dad',
    950: '#000000',
  },
}

SCSS

$custom: #646dad;
$custom-light: #9396c6;
$custom-dark: #000000;

JSON

{
  "hex": "#646dad",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 173
  },
  "hsl": {
    "h": 232.603,
    "s": 30.802,
    "l": 53.529
  },
  "oklch": {
    "l": 0.55526,
    "c": 0.09978,
    "h": 276.6
  },
  "luminance": 0.16664
}

Semantic roles & 50–950 ramp

primary

#646DAD

secondary

#C6C2A7

accent

#BA61C7

background

#F9F9FC

surface

#F2F2F8

border

#CCCCD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #646DAD

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

Preview Lab → · Contrast checker → · Palette generator →