#646EBA#646EBA

#646EBA is a mid, moderate blue. Relative luminance 0.174; OKLCH L 56.5% C 0.118 H 276.3°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#646EBA
RGB	rgb(100, 110, 186)
HSL	hsl(233, 38%, 56%)
HSV	hsv(233, 46%, 73%)
CMYK	cmyk(46.2%, 40.9%, 0%, 27.1%)
CIE-LAB	lab(48.77, 16.69, -41.35)
CIE-LCH	lch(48.77, 44.60, 291.98°)
OKLab	oklab(56.46% 0.0129 -0.1168)
OKLCH	oklch(56.46% 0.118 276.3)
XYZ	xyz(19.6917, 17.4053, 48.7668)
Luminance	0.1741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EBA #BAB064

analogous

#6499BA #646EBA #8564BA

triadic

#646EBA #BA646E #6EBA64

tetradic

#646EBA #BA6499 #BAB064 #64BA85

square

#646EBA #BA6499 #BAB064 #64BA85

split-complementary

#646EBA #BA8564 #99BA64

monochromatic

#323A71 #454F9C #646EBA #8E96CD #B9BDE0

Accessibility & contrast

On white

4.69

#646EBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#646EBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646EBA

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EBA	#FFFFFF	#000000	##FFFFFF
##646EBA	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5177BD

Deuteranopia (green-blind)

#4A71B8

Tritanopia (blue-blind)

#457E8B

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #646eba;
/* rgb */ color: rgb(100, 110, 186);
/* oklch */ color: oklch(56.5% 0.118 276.3);

Tailwind

colors: {
  custom: {
    50: '#9597cf',
    500: '#646eba',
    950: '#000000',
  },
}

SCSS

$custom: #646eba;
$custom-light: #9597cf;
$custom-dark: #000000;

JSON

{
  "hex": "#646eba",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 186
  },
  "hsl": {
    "h": 233.023,
    "s": 38.393,
    "l": 56.078
  },
  "oklch": {
    "l": 0.5646,
    "c": 0.11755,
    "h": 276.3
  },
  "luminance": 0.17406
}

Semantic roles & 50–950 ramp

primary

#646EBA

secondary

#CFCBAB

accent

#C159CE

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646EBA

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

Preview Lab → · Contrast checker → · Palette generator →