#646DD0#646DD0

#646DD0 is a mid, vivid blue. Relative luminance 0.182; OKLCH L 57.6% C 0.150 H 276.7°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#646DD0
RGB	rgb(100, 109, 208)
HSL	hsl(235, 53%, 60%)
HSV	hsv(235, 52%, 82%)
CMYK	cmyk(51.9%, 47.6%, 0%, 18.4%)
CIE-LAB	lab(49.74, 24.14, -52.44)
CIE-LCH	lch(49.74, 57.73, 294.72°)
OKLab	oklab(57.6% 0.0175 -0.1493)
OKLCH	oklch(57.6% 0.15 276.7)
XYZ	xyz(22.1057, 18.1993, 62.0103)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DD0 #D0C764

analogous

#64A3D0 #646DD0 #9164D0

triadic

#646DD0 #D0646D #6DD064

tetradic

#646DD0 #D064A3 #D0C764 #64D091

square

#646DD0 #D064A3 #D0C764 #64D091

split-complementary

#646DD0 #D09164 #A3D064

monochromatic

#2B338E #3944BD #646DD0 #9399DE #C2C5EC

Accessibility & contrast

On white

4.53

#646DD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#646DD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DD0

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DD0	#FFFFFF	#000000	##000000
##646DD0	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)

#407BD4

Deuteranopia (green-blind)

#3472CE

Tritanopia (blue-blind)

#358394

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646dd0;
/* rgb */ color: rgb(100, 109, 208);
/* oklch */ color: oklch(57.6% 0.150 276.7);

Tailwind

colors: {
  custom: {
    50: '#9796df',
    500: '#646dd0',
    950: '#000000',
  },
}

SCSS

$custom: #646dd0;
$custom-light: #9796df;
$custom-dark: #000000;

JSON

{
  "hex": "#646dd0",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 208
  },
  "hsl": {
    "h": 235,
    "s": 53.465,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57598,
    "c": 0.15035,
    "h": 276.7
  },
  "luminance": 0.18201
}

Semantic roles & 50–950 ramp

primary

#646DD0

secondary

#DDD9B3

accent

#B425C1

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646DD0

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

Preview Lab → · Contrast checker → · Palette generator →