#646FC7#646FC7

#646FC7 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.4% C 0.135 H 275.9°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646FC7
RGB	rgb(100, 111, 199)
HSL	hsl(233, 47%, 59%)
HSV	hsv(233, 50%, 78%)
CMYK	cmyk(49.7%, 44.2%, 0%, 22%)
CIE-LAB	lab(49.74, 20.09, -47.29)
CIE-LCH	lch(49.74, 51.38, 293.01°)
OKLab	oklab(57.43% 0.0139 -0.1342)
OKLCH	oklch(57.43% 0.135 275.9)
XYZ	xyz(21.2455, 18.2005, 56.4153)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC7 #C7BC64

analogous

#64A0C7 #646FC7 #8A64C7

triadic

#646FC7 #C7646F #6FC764

tetradic

#646FC7 #C764A0 #C7BC64 #64C78A

square

#646FC7 #C764A0 #C7BC64 #64C78A

split-complementary

#646FC7 #C78A64 #A0C764

monochromatic

#2F3882 #3F4CAF #646FC7 #9199D7 #BEC3E7

Accessibility & contrast

On white

4.53

#646FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646FC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FC7

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC7	#FFFFFF	#000000	##000000
##646FC7	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7ACA

Deuteranopia (green-blind)

#4172C5

Tritanopia (blue-blind)

#3C8291

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646fc7;
/* rgb */ color: rgb(100, 111, 199);
/* oklch */ color: oklch(57.4% 0.135 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698d8',
    500: '#646fc7',
    950: '#000000',
  },
}

SCSS

$custom: #646fc7;
$custom-light: #9698d8;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc7",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 199
  },
  "hsl": {
    "h": 233.333,
    "s": 46.919,
    "l": 58.627
  },
  "oklch": {
    "l": 0.57432,
    "c": 0.13493,
    "h": 275.9
  },
  "luminance": 0.18202
}

Semantic roles & 50–950 ramp

primary

#646FC7

secondary

#D7D3B0

accent

#C851D7

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646FC7

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

Preview Lab → · Contrast checker → · Palette generator →