#645BA2#645BA2

#645BA2 is a mid, moderate blue. Relative luminance 0.128; OKLCH L 51.2% C 0.110 H 287.7°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#645BA2
RGB	rgb(100, 91, 162)
HSL	hsl(248, 28%, 50%)
HSV	hsv(248, 44%, 64%)
CMYK	cmyk(38.3%, 43.8%, 0%, 36.5%)
CIE-LAB	lab(42.46, 21.29, -37.28)
CIE-LCH	lch(42.46, 42.93, 299.72°)
OKLab	oklab(51.24% 0.0335 -0.105)
OKLCH	oklch(51.24% 0.11 287.7)
XYZ	xyz(15.5164, 12.7997, 35.8285)
Luminance	0.1280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BA2 #99A25B

analogous

#5B76A2 #645BA2 #885BA2

triadic

#645BA2 #A2645B #5BA264

tetradic

#645BA2 #A25B76 #99A25B #5BA288

square

#645BA2 #A25B76 #99A25B #5BA288

split-complementary

#645BA2 #A2885B #76A25B

monochromatic

#342F54 #4C457B #645BA2 #8982B9 #AEA9CF

Accessibility & contrast

On white

5.90

#645BA2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#645BA2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BA2

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BA2	#FFFFFF	#000000	##FFFFFF
##645BA2	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)

#4366A5

Deuteranopia (green-blind)

#4262A0

Tritanopia (blue-blind)

#536976

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645ba2;
/* rgb */ color: rgb(100, 91, 162);
/* oklch */ color: oklch(51.2% 0.110 287.7);

Tailwind

colors: {
  custom: {
    50: '#9389be',
    500: '#645ba2',
    950: '#000000',
  },
}

SCSS

$custom: #645ba2;
$custom-light: #9389be;
$custom-dark: #000000;

JSON

{
  "hex": "#645ba2",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 162
  },
  "hsl": {
    "h": 247.606,
    "s": 28.063,
    "l": 49.608
  },
  "oklch": {
    "l": 0.51236,
    "c": 0.11022,
    "h": 287.7
  },
  "luminance": 0.128
}

Semantic roles & 50–950 ramp

primary

#645BA2

secondary

#B9BD9C

accent

#C463B8

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645BA2

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

Preview Lab → · Contrast checker → · Palette generator →