#646CD0#646CD0

#646CD0 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.4% C 0.152 H 277.1°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#646CD0
RGB	rgb(100, 108, 208)
HSL	hsl(236, 53%, 60%)
HSV	hsv(236, 52%, 82%)
CMYK	cmyk(51.9%, 48.1%, 0%, 18.4%)
CIE-LAB	lab(49.48, 24.75, -52.85)
CIE-LCH	lch(49.48, 58.36, 295.09°)
OKLab	oklab(57.4% 0.0186 -0.1505)
OKLCH	oklch(57.4% 0.152 277.1)
XYZ	xyz(21.9997, 17.9872, 61.9749)
Luminance	0.1799 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646CD0 #D0C864

analogous

#64A2D0 #646CD0 #9264D0

triadic

#646CD0 #D0646C #6CD064

tetradic

#646CD0 #D064A2 #D0C864 #64D092

square

#646CD0 #D064A2 #D0C864 #64D092

split-complementary

#646CD0 #D09264 #A2D064

monochromatic

#2B338E #3943BD #646CD0 #9399DE #C2C5EC

Accessibility & contrast

On white

4.57

#646CD0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#646CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646CD0

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646CD0	#FFFFFF	#000000	##000000
##646CD0	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)

#3E7AD4

Deuteranopia (green-blind)

#3271CE

Tritanopia (blue-blind)

#358294

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #646cd0;
/* rgb */ color: rgb(100, 108, 208);
/* oklch */ color: oklch(57.4% 0.152 277.1);

Tailwind

colors: {
  custom: {
    50: '#9796df',
    500: '#646cd0',
    950: '#000000',
  },
}

SCSS

$custom: #646cd0;
$custom-light: #9796df;
$custom-dark: #000000;

JSON

{
  "hex": "#646cd0",
  "rgb": {
    "r": 100,
    "g": 108,
    "b": 208
  },
  "hsl": {
    "h": 235.556,
    "s": 53.465,
    "l": 60.392
  },
  "oklch": {
    "l": 0.57404,
    "c": 0.15169,
    "h": 277.1
  },
  "luminance": 0.17989
}

Semantic roles & 50–950 ramp

primary

#646CD0

secondary

#DDD9B3

accent

#B525C1

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646CD0

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

Preview Lab → · Contrast checker → · Palette generator →