#646BD4#646BD4

#646BD4 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.5% C 0.159 H 277.3°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646BD4
RGB	rgb(100, 107, 212)
HSL	hsl(236, 57%, 61%)
HSV	hsv(236, 53%, 83%)
CMYK	cmyk(52.8%, 49.5%, 0%, 16.9%)
CIE-LAB	lab(49.47, 26.62, -55.15)
CIE-LCH	lch(49.47, 61.24, 295.77°)
OKLab	oklab(57.47% 0.0202 -0.1573)
OKLCH	oklch(57.47% 0.159 277.3)
XYZ	xyz(22.3931, 17.9768, 64.5645)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BD4 #D4CD64

analogous

#64A3D4 #646BD4 #9564D4

triadic

#646BD4 #D4646B #6BD464

tetradic

#646BD4 #D464A3 #D4CD64 #64D495

square

#646BD4 #D464A3 #D4CD64 #64D495

split-complementary

#646BD4 #D49564 #A3D464

monochromatic

#293094 #363FC4 #646BD4 #9499E1 #C4C6EF

Accessibility & contrast

On white

4.57

#646BD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#646BD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BD4

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BD4	#FFFFFF	#000000	##000000
##646BD4	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#387AD8

Deuteranopia (green-blind)

#2A71D2

Tritanopia (blue-blind)

#318295

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646bd4;
/* rgb */ color: rgb(100, 107, 212);
/* oklch */ color: oklch(57.5% 0.159 277.3);

Tailwind

colors: {
  custom: {
    50: '#9895e2',
    500: '#646bd4',
    950: '#000000',
  },
}

SCSS

$custom: #646bd4;
$custom-light: #9895e2;
$custom-dark: #000000;

JSON

{
  "hex": "#646bd4",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 212
  },
  "hsl": {
    "h": 236.25,
    "s": 56.566,
    "l": 61.176
  },
  "oklch": {
    "l": 0.57473,
    "c": 0.15859,
    "h": 277.3
  },
  "luminance": 0.17978
}

Semantic roles & 50–950 ramp

primary

#646BD4

secondary

#DFDCB5

accent

#BA21C4

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646BD4

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

Preview Lab → · Contrast checker → · Palette generator →