#646DC7#646DC7

#646DC7 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.0% C 0.138 H 276.8°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646DC7
RGB	rgb(100, 109, 199)
HSL	hsl(235, 47%, 59%)
HSV	hsv(235, 50%, 78%)
CMYK	cmyk(49.7%, 45.2%, 0%, 22%)
CIE-LAB	lab(49.21, 21.32, -48.13)
CIE-LCH	lch(49.21, 52.64, 293.89°)
OKLab	oklab(57.03% 0.0163 -0.1367)
OKLCH	oklch(57.03% 0.138 276.8)
XYZ	xyz(21.0298, 17.7689, 56.3434)
Luminance	0.1777 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC7 #C7BE64

analogous

#649EC7 #646DC7 #8C64C7

triadic

#646DC7 #C7646D #6DC764

tetradic

#646DC7 #C7649E #C7BE64 #64C78C

square

#646DC7 #C7649E #C7BE64 #64C78C

split-complementary

#646DC7 #C78C64 #9EC764

monochromatic

#2F3682 #3F49AF #646DC7 #9197D7 #BEC2E7

Accessibility & contrast

On white

4.61

#646DC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#646DC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC7

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC7	#FFFFFF	#000000	##FFFFFF
##646DC7	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4779CA

Deuteranopia (green-blind)

#3E71C5

Tritanopia (blue-blind)

#3D8090

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646dc7;
/* rgb */ color: rgb(100, 109, 199);
/* oklch */ color: oklch(57.0% 0.138 276.8);

Tailwind

colors: {
  custom: {
    50: '#9696d8',
    500: '#646dc7',
    950: '#000000',
  },
}

SCSS

$custom: #646dc7;
$custom-light: #9696d8;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc7",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 199
  },
  "hsl": {
    "h": 234.545,
    "s": 46.919,
    "l": 58.627
  },
  "oklch": {
    "l": 0.57033,
    "c": 0.13764,
    "h": 276.8
  },
  "luminance": 0.1777
}

Semantic roles & 50–950 ramp

primary

#646DC7

secondary

#D7D3B0

accent

#CA51D7

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC7

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

Preview Lab → · Contrast checker → · Palette generator →