#646DDA#646DDA

#646DDA is a mid, vivid blue. Relative luminance 0.187; OKLCH L 58.3% C 0.164 H 276.5°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#646DDA
RGB	rgb(100, 109, 218)
HSL	hsl(235, 61%, 62%)
HSV	hsv(235, 54%, 85%)
CMYK	cmyk(54.1%, 50%, 0%, 14.5%)
CIE-LAB	lab(50.34, 27.30, -57.15)
CIE-LCH	lch(50.34, 63.34, 295.54°)
OKLab	oklab(58.25% 0.0185 -0.1632)
OKLCH	oklch(58.25% 0.164 276.5)
XYZ	xyz(23.3750, 18.7070, 68.6951)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646DDA #DAD164

analogous

#64A8DA #646DDA #9664DA

triadic

#646DDA #DA646D #6DDA64

tetradic

#646DDA #DA64A8 #DAD164 #64DA96

square

#646DDA #DA64A8 #DAD164 #64DA96

split-complementary

#646DDA #DA9664 #A8DA64

monochromatic

#262F9E #333ECE #646DDA #959CE6 #C7CAF2

Accessibility & contrast

On white

4.43

#646DDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#646DDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646DDA

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646DDA	#FFFFFF	#000000	##000000
##646DDA	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#367DDE

Deuteranopia (green-blind)

#2573D8

Tritanopia (blue-blind)

#2A8599

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646dda;
/* rgb */ color: rgb(100, 109, 218);
/* oklch */ color: oklch(58.3% 0.164 276.5);

Tailwind

colors: {
  custom: {
    50: '#9996e6',
    500: '#646dda',
    950: '#000000',
  },
}

SCSS

$custom: #646dda;
$custom-light: #9996e6;
$custom-dark: #000000;

JSON

{
  "hex": "#646dda",
  "rgb": {
    "r": 100,
    "g": 109,
    "b": 218
  },
  "hsl": {
    "h": 235.424,
    "s": 61.458,
    "l": 62.353
  },
  "oklch": {
    "l": 0.58251,
    "c": 0.16422,
    "h": 276.5
  },
  "luminance": 0.18709
}

Semantic roles & 50–950 ramp

primary

#646DDA

secondary

#E2DFB7

accent

#BC1CC9

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0F0D16

muted

#7E7E84

Preview Lab

Preview with #646DDA

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

Preview Lab → · Contrast checker → · Palette generator →