#646FC4#646FC4

#646FC4 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.3% C 0.131 H 275.9°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#646FC4
RGB	rgb(100, 111, 196)
HSL	hsl(233, 45%, 58%)
HSV	hsv(233, 49%, 77%)
CMYK	cmyk(49%, 43.4%, 0%, 23.1%)
CIE-LAB	lab(49.57, 19.16, -45.84)
CIE-LCH	lch(49.57, 49.68, 292.68°)
OKLab	oklab(57.25% 0.0134 -0.1299)
OKLCH	oklch(57.25% 0.131 275.9)
XYZ	xyz(20.9007, 18.0625, 54.5989)
Luminance	0.1806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FC4 #C4B964

analogous

#649FC4 #646FC4 #8964C4

triadic

#646FC4 #C4646F #6FC464

tetradic

#646FC4 #C4649F #C4B964 #64C489

square

#646FC4 #C4649F #C4B964 #64C489

split-complementary

#646FC4 #C48964 #9FC464

monochromatic

#30397E #414DAA #646FC4 #9098D5 #BDC1E6

Accessibility & contrast

On white

4.55

#646FC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#646FC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FC4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FC4	#FFFFFF	#000000	##000000
##646FC4	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7AC7

Deuteranopia (green-blind)

#4472C2

Tritanopia (blue-blind)

#3F8190

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646fc4;
/* rgb */ color: rgb(100, 111, 196);
/* oklch */ color: oklch(57.3% 0.131 275.9);

Tailwind

colors: {
  custom: {
    50: '#9698d6',
    500: '#646fc4',
    950: '#000000',
  },
}

SCSS

$custom: #646fc4;
$custom-light: #9698d6;
$custom-dark: #000000;

JSON

{
  "hex": "#646fc4",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 196
  },
  "hsl": {
    "h": 233.125,
    "s": 44.86,
    "l": 58.039
  },
  "oklch": {
    "l": 0.57251,
    "c": 0.13063,
    "h": 275.9
  },
  "luminance": 0.18064
}

Semantic roles & 50–950 ramp

primary

#646FC4

secondary

#D5D1AF

accent

#C653D5

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646FC4

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

Preview Lab → · Contrast checker → · Palette generator →