#646BE1#646BE1

#646BE1 is a mid, vivid blue. Relative luminance 0.187; OKLCH L 58.4% C 0.176 H 276.9°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#646BE1
RGB	rgb(100, 107, 225)
HSL	hsl(237, 68%, 64%)
HSV	hsv(237, 56%, 88%)
CMYK	cmyk(55.6%, 52.4%, 0%, 11.8%)
CIE-LAB	lab(50.29, 30.75, -61.20)
CIE-LCH	lch(50.29, 68.49, 296.68°)
OKLab	oklab(58.35% 0.0212 -0.1751)
OKLCH	oklch(58.35% 0.176 276.9)
XYZ	xyz(24.0995, 18.6593, 73.5512)
Luminance	0.1866 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#646BE1 #E1DA64

analogous

#64A9E1 #646BE1 #9B64E1

triadic

#646BE1 #E1646B #6BE164

tetradic

#646BE1 #E164A9 #E1DA64 #64E19B

square

#646BE1 #E164A9 #E1DA64 #64E19B

split-complementary

#646BE1 #E19B64 #A9E164

monochromatic

#2129AA #313AD7 #646BE1 #979CEB #CBCDF5

Accessibility & contrast

On white

4.44

#646BE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#646BE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #646BE1

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##646BE1	#FFFFFF	#000000	##000000
##646BE1	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#277DE5

Deuteranopia (green-blind)

#0673DF

Tritanopia (blue-blind)

#20869C

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #646be1;
/* rgb */ color: rgb(100, 107, 225);
/* oklch */ color: oklch(58.4% 0.176 276.9);

Tailwind

colors: {
  custom: {
    50: '#9a95eb',
    500: '#646be1',
    950: '#000000',
  },
}

SCSS

$custom: #646be1;
$custom-light: #9a95eb;
$custom-dark: #000000;

JSON

{
  "hex": "#646be1",
  "rgb": {
    "r": 100,
    "g": 107,
    "b": 225
  },
  "hsl": {
    "h": 236.64,
    "s": 67.568,
    "l": 63.725
  },
  "oklch": {
    "l": 0.5835,
    "c": 0.17636,
    "h": 276.9
  },
  "luminance": 0.18661
}

Semantic roles & 50–950 ramp

primary

#646BE1

secondary

#E6E4BA

accent

#C516CF

background

#FAF9FE

surface

#F3F1FD

border

#CDCBD5

text

#0F0D16

muted

#7F7E84

Preview Lab

Preview with #646BE1

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

Preview Lab → · Contrast checker → · Palette generator →