#645DBF#645DBF

#645DBF is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.4% C 0.149 H 283.4°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#645DBF
RGB	rgb(100, 93, 191)
HSL	hsl(244, 43%, 56%)
HSV	hsv(244, 51%, 75%)
CMYK	cmyk(47.6%, 51.3%, 0%, 25.1%)
CIE-LAB	lab(44.66, 28.68, -50.80)
CIE-LCH	lch(44.66, 58.34, 299.45°)
OKLab	oklab(53.44% 0.0344 -0.1446)
OKLCH	oklch(53.44% 0.149 283.4)
XYZ	xyz(18.5711, 14.2987, 51.0615)
Luminance	0.1430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645DBF #B8BF5D

analogous

#5D87BF #645DBF #955DBF

triadic

#645DBF #BF645D #5DBF64

tetradic

#645DBF #BF5D87 #B8BF5D #5DBF95

square

#645DBF #BF5D87 #B8BF5D #5DBF95

split-complementary

#645DBF #BF955D #87BF5D

monochromatic

#332E74 #463FA0 #645DBF #8E89D0 #B8B5E2

Accessibility & contrast

On white

5.44

#645DBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#645DBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645DBF

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645DBF	#FFFFFF	#000000	##FFFFFF
##645DBF	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F6DC2

Deuteranopia (green-blind)

#2966BD

Tritanopia (blue-blind)

#447285

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645dbf;
/* rgb */ color: rgb(100, 93, 191);
/* oklch */ color: oklch(53.4% 0.149 283.4);

Tailwind

colors: {
  custom: {
    50: '#968bd3',
    500: '#645dbf',
    950: '#000000',
  },
}

SCSS

$custom: #645dbf;
$custom-light: #968bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#645dbf",
  "rgb": {
    "r": 100,
    "g": 93,
    "b": 191
  },
  "hsl": {
    "h": 244.286,
    "s": 43.363,
    "l": 55.686
  },
  "oklch": {
    "l": 0.5344,
    "c": 0.14865,
    "h": 283.4
  },
  "luminance": 0.143
}

Semantic roles & 50–950 ramp

primary

#645DBF

secondary

#CDD0A8

accent

#D355CA

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #645DBF

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

Preview Lab → · Contrast checker → · Palette generator →