#646CC0#646CC0

#646CC0 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.4% C 0.129 H 277.3°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#646CC0
RGB	rgb(100, 108, 192)
HSL	hsl(235, 42%, 57%)
HSV	hsv(235, 48%, 75%)
CMYK	cmyk(47.9%, 43.7%, 0%, 24.7%)
CIE-LAB	lab(48.56, 19.76, -45.15)
CIE-LCH	lch(48.56, 49.28, 293.64°)
OKLab	oklab(56.41% 0.0164 -0.1279)
OKLCH	oklch(56.41% 0.129 277.3)
XYZ	xyz(20.1296, 17.2391, 52.1258)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CC0 #C0B864

analogous

#649AC0 #646CC0 #8A64C0

triadic

#646CC0 #C0646C #6CC064

tetradic

#646CC0 #C0649A #C0B864 #64C08A

square

#646CC0 #C0649A #C0B864 #64C08A

split-complementary

#646CC0 #C08A64 #9AC064

monochromatic

#313779 #434BA4 #646CC0 #9095D2 #BBBFE3

Accessibility & contrast

On white

4.72

#646CC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#646CC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #646CC0

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CC0	#FFFFFF	#000000	##FFFFFF
##646CC0	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A77C3

Deuteranopia (green-blind)

#4370BE

Tritanopia (blue-blind)

#427E8D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #646cc0;
/* rgb */ color: rgb(100, 108, 192);
/* oklch */ color: oklch(56.4% 0.129 277.3);

Tailwind

colors: {
  custom: {
    50: '#9596d3',
    500: '#646cc0',
    950: '#000000',
  },
}

SCSS

$custom: #646cc0;
$custom-light: #9596d3;
$custom-dark: #000000;

JSON

{
  "hex": "#646cc0",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 192
  },
  "hsl": {
    "h": 234.783,
    "s": 42.202,
    "l": 57.255
  },
  "oklch": {
    "l": 0.56408,
    "c": 0.12899,
    "h": 277.3
  },
  "luminance": 0.1724
}

Semantic roles & 50–950 ramp

primary

#646CC0

secondary

#D3CFAD

accent

#C756D2

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646CC0

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

Preview Lab → · Contrast checker → · Palette generator →