#644FCF#644FCF

#644FCF is a mid, vivid blue. Relative luminance 0.128; OKLCH L 52.2% C 0.189 H 285.3°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#644FCF
RGB	rgb(100, 79, 207)
HSL	hsl(250, 57%, 56%)
HSV	hsv(250, 62%, 81%)
CMYK	cmyk(51.7%, 61.8%, 0%, 18.8%)
CIE-LAB	lab(42.47, 41.92, -63.59)
CIE-LCH	lch(42.47, 76.16, 303.39°)
OKLab	oklab(52.17% 0.0498 -0.1823)
OKLCH	oklch(52.17% 0.189 285.3)
XYZ	xyz(19.3106, 12.8053, 60.4735)
Luminance	0.1281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#644FCF #BACF4F

analogous

#4F7ACF #644FCF #A44FCF

triadic

#644FCF #CF644F #4FCF64

tetradic

#644FCF #CF4F7A #BACF4F #4FCFA4

square

#644FCF #CF4F7A #BACF4F #4FCFA4

split-complementary

#644FCF #CFA44F #7ACF4F

monochromatic

#322381 #4530B1 #644FCF #8E7FDC #B9AFE9

Accessibility & contrast

On white

5.90

#644FCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#644FCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #644FCF

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##644FCF	#FFFFFF	#000000	##FFFFFF
##644FCF	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D3

Deuteranopia (green-blind)

#0060CC

Tritanopia (blue-blind)

#3A6E88

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #644fcf;
/* rgb */ color: rgb(100, 79, 207);
/* oklch */ color: oklch(52.2% 0.189 285.3);

Tailwind

colors: {
  custom: {
    50: '#9981df',
    500: '#644fcf',
    950: '#000000',
  },
}

SCSS

$custom: #644fcf;
$custom-light: #9981df;
$custom-dark: #000000;

JSON

{
  "hex": "#644fcf",
  "rgb": {
    "r": 100,
    "g": 79,
    "b": 207
  },
  "hsl": {
    "h": 249.844,
    "s": 57.143,
    "l": 56.078
  },
  "oklch": {
    "l": 0.52167,
    "c": 0.18899,
    "h": 285.3
  },
  "luminance": 0.12806
}

Semantic roles & 50–950 ramp

primary

#644FCF

secondary

#CFD7A2

accent

#E047C7

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0A15

muted

#7E7C83

Preview Lab

Preview with #644FCF

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

Preview Lab → · Contrast checker → · Palette generator →