#646EC0#646EC0

#646EC0 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.8% C 0.126 H 276.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#646EC0
RGB	rgb(100, 110, 192)
HSL	hsl(233, 42%, 57%)
HSV	hsv(233, 48%, 75%)
CMYK	cmyk(47.9%, 42.7%, 0%, 24.7%)
CIE-LAB	lab(49.09, 18.53, -44.31)
CIE-LCH	lch(49.09, 48.03, 292.70°)
OKLab	oklab(56.81% 0.014 -0.1255)
OKLCH	oklch(56.81% 0.126 276.4)
XYZ	xyz(20.3429, 17.6658, 52.1969)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646EC0 #C0B664

analogous

#649CC0 #646EC0 #8864C0

triadic

#646EC0 #C0646E #6EC064

tetradic

#646EC0 #C0649C #C0B664 #64C088

square

#646EC0 #C0649C #C0B664 #64C088

split-complementary

#646EC0 #C08864 #9CC064

monochromatic

#313979 #434DA4 #646EC0 #9097D2 #BBBFE3

Accessibility & contrast

On white

4.63

#646EC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#646EC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646EC0

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646EC0	#FFFFFF	#000000	##FFFFFF
##646EC0	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E78C3

Deuteranopia (green-blind)

#4671BE

Tritanopia (blue-blind)

#427F8E

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646ec0;
/* rgb */ color: rgb(100, 110, 192);
/* oklch */ color: oklch(56.8% 0.126 276.4);

Tailwind

colors: {
  custom: {
    50: '#9597d3',
    500: '#646ec0',
    950: '#000000',
  },
}

SCSS

$custom: #646ec0;
$custom-light: #9597d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646ec0",
  "rgb": {
    "r": 100,
    "g": 110,
    "b": 192
  },
  "hsl": {
    "h": 233.478,
    "s": 42.202,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56811,
    "c": 0.12625,
    "h": 276.4
  },
  "luminance": 0.17667
}

Semantic roles & 50–950 ramp

primary

#646EC0

secondary

#D3CEAD

accent

#C456D2

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646EC0

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

Preview Lab → · Contrast checker → · Palette generator →