#645FBF#645FBF

#645FBF is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.8% C 0.146 H 282.7°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#645FBF
RGB	rgb(100, 95, 191)
HSL	hsl(243, 43%, 56%)
HSV	hsv(243, 50%, 75%)
CMYK	cmyk(47.6%, 50.3%, 0%, 25.1%)
CIE-LAB	lab(45.16, 27.45, -50.00)
CIE-LCH	lch(45.16, 57.04, 298.77°)
OKLab	oklab(53.81% 0.032 -0.1423)
OKLCH	oklch(53.81% 0.146 282.7)
XYZ	xyz(18.7489, 14.6544, 51.1208)
Luminance	0.1466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FBF #BABF5F

analogous

#5F8ABF #645FBF #945FBF

triadic

#645FBF #BF645F #5FBF64

tetradic

#645FBF #BF5F8A #BABF5F #5FBF94

square

#645FBF #BF5F8A #BABF5F #5FBF94

split-complementary

#645FBF #BF945F #8ABF5F

monochromatic

#322F75 #4540A1 #645FBF #8E8BD0 #B9B6E2

Accessibility & contrast

On white

5.34

#645FBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#645FBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FBF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FBF	#FFFFFF	#000000	##FFFFFF
##645FBF	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336EC2

Deuteranopia (green-blind)

#2D68BD

Tritanopia (blue-blind)

#447486

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #645fbf;
/* rgb */ color: rgb(100, 95, 191);
/* oklch */ color: oklch(53.8% 0.146 282.7);

Tailwind

colors: {
  custom: {
    50: '#968cd3',
    500: '#645fbf',
    950: '#000000',
  },
}

SCSS

$custom: #645fbf;
$custom-light: #968cd3;
$custom-dark: #000000;

JSON

{
  "hex": "#645fbf",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 191
  },
  "hsl": {
    "h": 243.125,
    "s": 42.857,
    "l": 56.078
  },
  "oklch": {
    "l": 0.53814,
    "c": 0.14582,
    "h": 282.7
  },
  "luminance": 0.14655
}

Semantic roles & 50–950 ramp

primary

#645FBF

secondary

#CFD1A9

accent

#D355CC

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #645FBF

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

Preview Lab → · Contrast checker → · Palette generator →