#646EAA#646EAA

#646EAA is a mid, moderate blue. Relative luminance 0.168; OKLCH L 55.6% C 0.094 H 275.7°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#646EAA
RGB	rgb(100, 110, 170)
HSL	hsl(231, 29%, 53%)
HSV	hsv(231, 41%, 67%)
CMYK	cmyk(41.2%, 35.3%, 0%, 33.3%)
CIE-LAB	lab(47.96, 11.90, -33.33)
CIE-LCH	lch(47.96, 35.39, 289.64°)
OKLab	oklab(55.58% 0.0093 -0.0935)
OKLCH	oklch(55.58% 0.094 275.7)
XYZ	xyz(18.0850, 16.7626, 40.3050)
Luminance	0.1676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EAA #AAA064

analogous

#6491AA #646EAA #7D64AA

triadic

#646EAA #AA646E #6EAA64

tetradic

#646EAA #AA6491 #AAA064 #64AA7D

square

#646EAA #AA6491 #AAA064 #64AA7D

split-complementary

#646EAA #AA7D64 #91AA64

monochromatic

#343A5F #4A5387 #646EAA #8C93C0 #B3B8D5

Accessibility & contrast

On white

4.82

#646EAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#646EAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EAA

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EAA	#FFFFFF	#000000	##FFFFFF
##646EAA	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A75AC

Deuteranopia (green-blind)

#546FA9

Tritanopia (blue-blind)

#4E7A84

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #646eaa;
/* rgb */ color: rgb(100, 110, 170);
/* oklch */ color: oklch(55.6% 0.094 275.7);

Tailwind

colors: {
  custom: {
    50: '#9397c3',
    500: '#646eaa',
    950: '#000000',
  },
}

SCSS

$custom: #646eaa;
$custom-light: #9397c3;
$custom-dark: #000000;

JSON

{
  "hex": "#646eaa",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 170
  },
  "hsl": {
    "h": 231.429,
    "s": 29.167,
    "l": 52.941
  },
  "oklch": {
    "l": 0.55576,
    "c": 0.09393,
    "h": 275.7
  },
  "luminance": 0.16763
}

Semantic roles & 50–950 ramp

primary

#646EAA

secondary

#C4C0A6

accent

#B762C5

background

#F9F9FC

surface

#F1F2F8

border

#CBCCD1

text

#0D0D12

muted

#7E7E81

Preview Lab

Preview with #646EAA

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

Preview Lab → · Contrast checker → · Palette generator →