#646CE4#646CE4

#646CE4 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.7% C 0.179 H 276.5°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#646CE4
RGB	rgb(100, 108, 228)
HSL	hsl(236, 70%, 64%)
HSV	hsv(236, 56%, 89%)
CMYK	cmyk(56.1%, 52.6%, 0%, 10.6%)
CIE-LAB	lab(50.73, 31.10, -62.18)
CIE-LCH	lch(50.73, 69.52, 296.57°)
OKLab	oklab(58.74% 0.0203 -0.178)
OKLCH	oklch(58.74% 0.179 276.5)
XYZ	xyz(24.6172, 19.0342, 75.7605)
Luminance	0.1904 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CE4 #E4DC64

analogous

#64ACE4 #646CE4 #9C64E4

triadic

#646CE4 #E4646C #6CE464

tetradic

#646CE4 #E464AC #E4DC64 #64E49C

square

#646CE4 #E464AC #E4DC64 #64E49C

split-complementary

#646CE4 #E49C64 #ACE464

monochromatic

#1F28AF #303BDB #646CE4 #989DED #CCCFF6

Accessibility & contrast

On white

4.37

#646CE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#646CE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CE4

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CE4	#FFFFFF	#000000	##000000
##646CE4	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#257EE8

Deuteranopia (green-blind)

#0074E1

Tritanopia (blue-blind)

#19879E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #646ce4;
/* rgb */ color: rgb(100, 108, 228);
/* oklch */ color: oklch(58.7% 0.179 276.5);

Tailwind

colors: {
  custom: {
    50: '#9a96ed',
    500: '#646ce4',
    950: '#000000',
  },
}

SCSS

$custom: #646ce4;
$custom-light: #9a96ed;
$custom-dark: #000000;

JSON

{
  "hex": "#646ce4",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 228
  },
  "hsl": {
    "h": 236.25,
    "s": 70.33,
    "l": 64.314
  },
  "oklch": {
    "l": 0.58743,
    "c": 0.17912,
    "h": 276.5
  },
  "luminance": 0.19036
}

Semantic roles & 50–950 ramp

primary

#646CE4

secondary

#E8E5BC

accent

#C613D2

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646CE4

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

Preview Lab → · Contrast checker → · Palette generator →