#646ABC#646ABC

#646ABC is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.8% C 0.126 H 278.3°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#646ABC
RGB	rgb(100, 106, 188)
HSL	hsl(236, 40%, 56%)
HSV	hsv(236, 47%, 74%)
CMYK	cmyk(46.8%, 43.6%, 0%, 26.3%)
CIE-LAB	lab(47.81, 19.76, -44.03)
CIE-LCH	lch(47.81, 48.26, 294.17°)
OKLab	oklab(55.77% 0.0182 -0.1247)
OKLCH	oklch(55.77% 0.126 278.3)
XYZ	xyz(19.4839, 16.6472, 49.7538)
Luminance	0.1665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ABC #BCB664

analogous

#6496BC #646ABC #8A64BC

triadic

#646ABC #BC646A #6ABC64

tetradic

#646ABC #BC6496 #BCB664 #64BC8A

square

#646ABC #BC6496 #BCB664 #64BC8A

split-complementary

#646ABC #BC8A64 #96BC64

monochromatic

#323674 #444B9E #646ABC #8F93CE #B9BCE1

Accessibility & contrast

On white

4.85

#646ABC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#646ABC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646ABC

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ABC	#FFFFFF	#000000	##FFFFFF
##646ABC	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)

#4A75BF

Deuteranopia (green-blind)

#436EBA

Tritanopia (blue-blind)

#457B8A

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646abc;
/* rgb */ color: rgb(100, 106, 188);
/* oklch */ color: oklch(55.8% 0.126 278.3);

Tailwind

colors: {
  custom: {
    50: '#9594d0',
    500: '#646abc',
    950: '#000000',
  },
}

SCSS

$custom: #646abc;
$custom-light: #9594d0;
$custom-dark: #000000;

JSON

{
  "hex": "#646abc",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 188
  },
  "hsl": {
    "h": 235.909,
    "s": 39.64,
    "l": 56.471
  },
  "oklch": {
    "l": 0.55766,
    "c": 0.12599,
    "h": 278.3
  },
  "luminance": 0.16648
}

Semantic roles & 50–950 ramp

primary

#646ABC

secondary

#D0CEAC

accent

#C758D0

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646ABC

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

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