#646FD3#646FD3

#646FD3 is a mid, vivid blue. Relative luminance 0.188; OKLCH L 58.2% C 0.152 H 275.9°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#646FD3
RGB	rgb(100, 111, 211)
HSL	hsl(234, 56%, 61%)
HSV	hsv(234, 53%, 83%)
CMYK	cmyk(52.6%, 47.4%, 0%, 17.3%)
CIE-LAB	lab(50.43, 23.86, -53.04)
CIE-LCH	lch(50.43, 58.16, 294.22°)
OKLab	oklab(58.18% 0.0156 -0.1511)
OKLCH	oklch(58.18% 0.152 275.9)
XYZ	xyz(22.6941, 18.7799, 64.0444)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646FD3 #D3C864

analogous

#64A6D3 #646FD3 #9064D3

triadic

#646FD3 #D3646F #6FD364

tetradic

#646FD3 #D364A6 #D3C864 #64D390

square

#646FD3 #D364A6 #D3C864 #64D390

split-complementary

#646FD3 #D39064 #A6D364

monochromatic

#2A3493 #3745C3 #646FD3 #949BE1 #C3C8EE

Accessibility & contrast

On white

4.42

#646FD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#646FD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646FD3

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646FD3	#FFFFFF	#000000	##000000
##646FD3	1.00	4.42	4.76	4.76
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#417DD7

Deuteranopia (green-blind)

#3574D1

Tritanopia (blue-blind)

#328597

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646fd3;
/* rgb */ color: rgb(100, 111, 211);
/* oklch */ color: oklch(58.2% 0.152 275.9);

Tailwind

colors: {
  custom: {
    50: '#9898e1',
    500: '#646fd3',
    950: '#000000',
  },
}

SCSS

$custom: #646fd3;
$custom-light: #9898e1;
$custom-dark: #000000;

JSON

{
  "hex": "#646fd3",
  "rgb": {
    "r": 100,
    "g": 111,
    "b": 211
  },
  "hsl": {
    "h": 234.054,
    "s": 55.779,
    "l": 60.98
  },
  "oklch": {
    "l": 0.5818,
    "c": 0.15187,
    "h": 275.9
  },
  "luminance": 0.18781
}

Semantic roles & 50–950 ramp

primary

#646FD3

secondary

#DEDAB4

accent

#B322C3

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #646FD3

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

Preview Lab → · Contrast checker → · Palette generator →