#645CB3#645CB3

#645CB3 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.5% C 0.133 H 285.0°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#645CB3
RGB	rgb(100, 92, 179)
HSL	hsl(246, 36%, 53%)
HSV	hsv(246, 49%, 70%)
CMYK	cmyk(44.1%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(43.68, 25.67, -45.37)
CIE-LCH	lch(43.68, 52.13, 299.50°)
OKLab	oklab(52.47% 0.0345 -0.1287)
OKLCH	oklch(52.47% 0.133 285)
XYZ	xyz(17.2170, 13.6176, 44.3604)
Luminance	0.1362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CB3 #ABB35C

analogous

#5C7FB3 #645CB3 #8F5CB3

triadic

#645CB3 #B3645C #5CB364

tetradic

#645CB3 #B35C7F #ABB35C #5CB38F

square

#645CB3 #B35C7F #ABB35C #5CB38F

split-complementary

#645CB3 #B38F5C #7FB35C

monochromatic

#342F65 #4A438F #645CB3 #8C86C6 #B3AFDA

Accessibility & contrast

On white

5.64

#645CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#645CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CB3

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CB3	#FFFFFF	#000000	##FFFFFF
##645CB3	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#386AB6

Deuteranopia (green-blind)

#3565B1

Tritanopia (blue-blind)

#4B6E7F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #645cb3;
/* rgb */ color: rgb(100, 92, 179);
/* oklch */ color: oklch(52.5% 0.133 285.0);

Tailwind

colors: {
  custom: {
    50: '#958aca',
    500: '#645cb3',
    950: '#000000',
  },
}

SCSS

$custom: #645cb3;
$custom-light: #958aca;
$custom-dark: #000000;

JSON

{
  "hex": "#645cb3",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 245.517,
    "s": 36.402,
    "l": 53.137
  },
  "oklch": {
    "l": 0.5247,
    "c": 0.13322,
    "h": 285
  },
  "luminance": 0.13618
}

Semantic roles & 50–950 ramp

primary

#645CB3

secondary

#C5C8A3

accent

#CC5BC2

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0E0B13

muted

#7E7C82

Preview Lab

Preview with #645CB3

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

Preview Lab → · Contrast checker → · Palette generator →