#646ABB#646ABB

#646ABB is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.7% C 0.125 H 278.3°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#646ABB
RGB	rgb(100, 106, 187)
HSL	hsl(236, 39%, 56%)
HSV	hsv(236, 47%, 73%)
CMYK	cmyk(46.5%, 43.3%, 0%, 26.7%)
CIE-LAB	lab(47.76, 19.46, -43.53)
CIE-LCH	lch(47.76, 47.68, 294.08°)
OKLab	oklab(55.71% 0.0181 -0.1232)
OKLCH	oklch(55.71% 0.125 278.3)
XYZ	xyz(19.3765, 16.6042, 49.1880)
Luminance	0.1661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646ABB #BBB564

analogous

#6496BB #646ABB #8A64BB

triadic

#646ABB #BB646A #6ABB64

tetradic

#646ABB #BB6496 #BBB564 #64BB8A

square

#646ABB #BB6496 #BBB564 #64BB8A

split-complementary

#646ABB #BB8A64 #96BB64

monochromatic

#323772 #454B9D #646ABB #8F93CE #B9BCE0

Accessibility & contrast

On white

4.86

#646ABB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#646ABB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646ABB

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646ABB	#FFFFFF	#000000	##FFFFFF
##646ABB	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A75BE

Deuteranopia (green-blind)

#446EB9

Tritanopia (blue-blind)

#457B89

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #646abb;
/* rgb */ color: rgb(100, 106, 187);
/* oklch */ color: oklch(55.7% 0.125 278.3);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#646abb",
  "rgb": {
    "r": 100,
    "g": 106,
    "b": 187
  },
  "hsl": {
    "h": 235.862,
    "s": 39.013,
    "l": 56.275
  },
  "oklch": {
    "l": 0.55707,
    "c": 0.12454,
    "h": 278.3
  },
  "luminance": 0.16605
}

Semantic roles & 50–950 ramp

primary

#646ABB

secondary

#CFCDAB

accent

#C759CF

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #646ABB

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

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