#646CD4#646CD4

#646CD4 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.7% C 0.157 H 277.0°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646CD4
RGB	rgb(100, 108, 212)
HSL	hsl(236, 57%, 61%)
HSV	hsv(236, 53%, 83%)
CMYK	cmyk(52.8%, 49.1%, 0%, 16.9%)
CIE-LAB	lab(49.72, 26.01, -54.74)
CIE-LCH	lch(49.72, 60.61, 295.42°)
OKLab	oklab(57.66% 0.0191 -0.1561)
OKLCH	oklch(57.66% 0.157 277)
XYZ	xyz(22.4980, 18.1865, 64.5994)
Luminance	0.1819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CD4 #D4CC64

analogous

#64A4D4 #646CD4 #9464D4

triadic

#646CD4 #D4646C #6CD464

tetradic

#646CD4 #D464A4 #D4CC64 #64D494

square

#646CD4 #D464A4 #D4CC64 #64D494

split-complementary

#646CD4 #D49464 #A4D464

monochromatic

#293194 #3641C4 #646CD4 #9499E1 #C4C7EF

Accessibility & contrast

On white

4.53

#646CD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646CD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CD4

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CD4	#FFFFFF	#000000	##000000
##646CD4	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)

#3A7BD8

Deuteranopia (green-blind)

#2D72D2

Tritanopia (blue-blind)

#318396

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646cd4;
/* rgb */ color: rgb(100, 108, 212);
/* oklch */ color: oklch(57.7% 0.157 277.0);

Tailwind

colors: {
  custom: {
    50: '#9896e2',
    500: '#646cd4',
    950: '#000000',
  },
}

SCSS

$custom: #646cd4;
$custom-light: #9896e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646cd4",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 212
  },
  "hsl": {
    "h": 235.714,
    "s": 56.566,
    "l": 61.176
  },
  "oklch": {
    "l": 0.57664,
    "c": 0.15726,
    "h": 277
  },
  "luminance": 0.18188
}

Semantic roles & 50–950 ramp

primary

#646CD4

secondary

#DFDCB5

accent

#B821C4

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646CD4

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

Preview Lab → · Contrast checker → · Palette generator →