#645EFB#645EFB

#645EFB is a mid, highly saturated blue. Relative luminance 0.177; OKLCH L 58.1% C 0.226 H 278.4°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#645EFB
RGB	rgb(100, 94, 251)
HSL	hsl(242, 95%, 68%)
HSV	hsv(242, 63%, 98%)
CMYK	cmyk(60.2%, 62.5%, 0%, 1.6%)
CIE-LAB	lab(49.10, 46.70, -77.69)
CIE-LCH	lch(49.10, 90.64, 301.01°)
OKLab	oklab(58.06% 0.033 -0.2237)
OKLCH	oklch(58.06% 0.226 278.4)
XYZ	xyz(26.6652, 17.6777, 93.2551)
Luminance	0.1768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EFB #F5FB5E

analogous

#5EA6FB #645EFB #B25EFB

triadic

#645EFB #FB645E #5EFB64

tetradic

#645EFB #FB5EA6 #F5FB5E #5EFBB2

square

#645EFB #FB5EA6 #F5FB5E #5EFBB2

split-complementary

#645EFB #FBB25E #A6FB5E

monochromatic

#0D05D9 #2B22FA #645EFB #9D9AFC #D7D5FE

Accessibility & contrast

On white

4.63

#645EFB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#645EFB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #645EFB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EFB	#FFFFFF	#000000	##FFFFFF
##645EFB	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#007BFF

Deuteranopia (green-blind)

#006EF8

Tritanopia (blue-blind)

#0086A4

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #645efb;
/* rgb */ color: rgb(100, 94, 251);
/* oklch */ color: oklch(58.1% 0.226 278.4);

Tailwind

colors: {
  custom: {
    50: '#9e8cfe',
    500: '#645efb',
    950: '#000000',
  },
}

SCSS

$custom: #645efb;
$custom-light: #9e8cfe;
$custom-dark: #000000;

JSON

{
  "hex": "#645efb",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 251
  },
  "hsl": {
    "h": 242.293,
    "s": 95.152,
    "l": 67.647
  },
  "oklch": {
    "l": 0.58056,
    "c": 0.22609,
    "h": 278.4
  },
  "luminance": 0.1768
}

Semantic roles & 50–950 ramp

primary

#645EFB

secondary

#F1F3C2

accent

#E600DD

background

#FAF8FF

surface

#F4F0FF

border

#CECBD7

text

#100C18

muted

#7F7D86

Preview Lab

Preview with #645EFB

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

Preview Lab → · Contrast checker → · Palette generator →