#646FA4#646FA4

#646FA4 is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.5% C 0.084 H 274.4°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#646FA4
RGB	rgb(100, 111, 164)
HSL	hsl(230, 26%, 52%)
HSV	hsv(230, 39%, 64%)
CMYK	cmyk(39%, 32.3%, 0%, 35.7%)
CIE-LAB	lab(47.95, 9.54, -29.83)
CIE-LCH	lch(47.95, 31.31, 287.73°)
OKLab	oklab(55.48% 0.0064 -0.0833)
OKLCH	oklch(55.48% 0.084 274.4)
XYZ	xyz(17.6388, 16.7578, 37.4199)
Luminance	0.1676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FA4 #A49964

analogous

#648FA4 #646FA4 #7964A4

triadic

#646FA4 #A4646F #6FA464

tetradic

#646FA4 #A4648F #A49964 #64A479

square

#646FA4 #A4648F #A49964 #64A479

split-complementary

#646FA4 #A47964 #8FA464

monochromatic

#343B59 #4B5480 #646FA4 #8B93BB #B1B7D1

Accessibility & contrast

On white

4.83

#646FA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#646FA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646FA4

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FA4	#FFFFFF	#000000	##FFFFFF
##646FA4	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D75A6

Deuteranopia (green-blind)

#596FA3

Tritanopia (blue-blind)

#517982

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646fa4;
/* rgb */ color: rgb(100, 111, 164);
/* oklch */ color: oklch(55.5% 0.084 274.4);

Tailwind

colors: {
  custom: {
    50: '#9298bf',
    500: '#646fa4',
    950: '#000000',
  },
}

SCSS

$custom: #646fa4;
$custom-light: #9298bf;
$custom-dark: #000000;

JSON

{
  "hex": "#646fa4",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 164
  },
  "hsl": {
    "h": 229.688,
    "s": 26.016,
    "l": 51.765
  },
  "oklch": {
    "l": 0.55478,
    "c": 0.08359,
    "h": 274.4
  },
  "luminance": 0.16759
}

Semantic roles & 50–950 ramp

primary

#646FA4

secondary

#C0BBA4

accent

#B265C2

background

#F9F9FB

surface

#F1F2F7

border

#CBCCD0

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646FA4

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

Preview Lab → · Contrast checker → · Palette generator →