#646DC4#646DC4

#646DC4 is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.9% C 0.133 H 276.8°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646DC4
RGB	rgb(100, 109, 196)
HSL	hsl(234, 45%, 58%)
HSV	hsv(234, 49%, 77%)
CMYK	cmyk(49%, 44.4%, 0%, 23.1%)
CIE-LAB	lab(49.05, 20.38, -46.68)
CIE-LCH	lch(49.05, 50.93, 293.59°)
OKLab	oklab(56.85% 0.0158 -0.1324)
OKLCH	oklch(56.85% 0.133 276.8)
XYZ	xyz(20.6849, 17.6309, 54.5270)
Luminance	0.1763 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DC4 #C4BB64

analogous

#649DC4 #646DC4 #8B64C4

triadic

#646DC4 #C4646D #6DC464

tetradic

#646DC4 #C4649D #C4BB64 #64C48B

square

#646DC4 #C4649D #C4BB64 #64C48B

split-complementary

#646DC4 #C48B64 #9DC464

monochromatic

#30377E #414BAA #646DC4 #9097D5 #BDC1E6

Accessibility & contrast

On white

4.64

#646DC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#646DC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #646DC4

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DC4	#FFFFFF	#000000	##FFFFFF
##646DC4	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4979C7

Deuteranopia (green-blind)

#4171C2

Tritanopia (blue-blind)

#3F7F8F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #646dc4;
/* rgb */ color: rgb(100, 109, 196);
/* oklch */ color: oklch(56.9% 0.133 276.8);

Tailwind

colors: {
  custom: {
    50: '#9696d6',
    500: '#646dc4',
    950: '#000000',
  },
}

SCSS

$custom: #646dc4;
$custom-light: #9696d6;
$custom-dark: #000000;

JSON

{
  "hex": "#646dc4",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 196
  },
  "hsl": {
    "h": 234.375,
    "s": 44.86,
    "l": 58.039
  },
  "oklch": {
    "l": 0.5685,
    "c": 0.13335,
    "h": 276.8
  },
  "luminance": 0.17632
}

Semantic roles & 50–950 ramp

primary

#646DC4

secondary

#D5D1AF

accent

#C853D5

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #646DC4

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

Preview Lab → · Contrast checker → · Palette generator →