#646FD4#646FD4

#646FD4 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.2% C 0.153 H 275.9°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#646FD4
RGB	rgb(100, 111, 212)
HSL	hsl(234, 57%, 61%)
HSV	hsv(234, 53%, 83%)
CMYK	cmyk(52.8%, 47.6%, 0%, 16.9%)
CIE-LAB	lab(50.49, 24.18, -53.51)
CIE-LCH	lch(50.49, 58.72, 294.31°)
OKLab	oklab(58.24% 0.0157 -0.1525)
OKLCH	oklch(58.24% 0.153 275.9)
XYZ	xyz(22.8199, 18.8302, 64.7067)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FD4 #D4C964

analogous

#64A7D4 #646FD4 #9164D4

triadic

#646FD4 #D4646F #6FD464

tetradic

#646FD4 #D464A7 #D4C964 #64D491

square

#646FD4 #D464A7 #D4C964 #64D491

split-complementary

#646FD4 #D49164 #A7D464

monochromatic

#293494 #3644C4 #646FD4 #949CE1 #C4C8EF

Accessibility & contrast

On white

4.41

#646FD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#646FD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FD4

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FD4	#FFFFFF	#000000	##000000
##646FD4	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#407DD8

Deuteranopia (green-blind)

#3374D2

Tritanopia (blue-blind)

#308597

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646fd4;
/* rgb */ color: rgb(100, 111, 212);
/* oklch */ color: oklch(58.2% 0.153 275.9);

Tailwind

colors: {
  custom: {
    50: '#9898e2',
    500: '#646fd4',
    950: '#000000',
  },
}

SCSS

$custom: #646fd4;
$custom-light: #9898e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646fd4",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 212
  },
  "hsl": {
    "h": 234.107,
    "s": 56.566,
    "l": 61.176
  },
  "oklch": {
    "l": 0.58244,
    "c": 0.15327,
    "h": 275.9
  },
  "luminance": 0.18832
}

Semantic roles & 50–950 ramp

primary

#646FD4

secondary

#DFDBB5

accent

#B421C4

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FD4

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

Preview Lab → · Contrast checker → · Palette generator →