#645CAA#645CAA

#645CAA is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.9% C 0.120 H 286.1°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#645CAA
RGB	rgb(100, 92, 170)
HSL	hsl(246, 31%, 51%)
HSV	hsv(246, 46%, 67%)
CMYK	cmyk(41.2%, 45.9%, 0%, 33.3%)
CIE-LAB	lab(43.16, 23.00, -40.91)
CIE-LCH	lch(43.16, 46.93, 299.34°)
OKLab	oklab(51.91% 0.0334 -0.1156)
OKLCH	oklch(51.91% 0.12 286.1)
XYZ	xyz(16.3363, 13.2653, 39.7221)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645CAA #A2AA5C

analogous

#5C7BAA #645CAA #8B5CAA

triadic

#645CAA #AA645C #5CAA64

tetradic

#645CAA #AA5C7B #A2AA5C #5CAA8B

square

#645CAA #AA5C7B #A2AA5C #5CAA8B

split-complementary

#645CAA #AA8B5C #7BAA5C

monochromatic

#34305C #4B4584 #645CAA #8A84BF #B1ACD4

Accessibility & contrast

On white

5.75

#645CAA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#645CAA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645CAA

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645CAA	#FFFFFF	#000000	##FFFFFF
##645CAA	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F68AD

Deuteranopia (green-blind)

#3D64A8

Tritanopia (blue-blind)

#506C7B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645caa;
/* rgb */ color: rgb(100, 92, 170);
/* oklch */ color: oklch(51.9% 0.120 286.1);

Tailwind

colors: {
  custom: {
    50: '#948ac4',
    500: '#645caa',
    950: '#000000',
  },
}

SCSS

$custom: #645caa;
$custom-light: #948ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#645caa",
  "rgb": {
    "r": 100,
    "g": 92,
    "b": 170
  },
  "hsl": {
    "h": 246.154,
    "s": 31.452,
    "l": 51.373
  },
  "oklch": {
    "l": 0.5191,
    "c": 0.12032,
    "h": 286.1
  },
  "luminance": 0.13266
}

Semantic roles & 50–950 ramp

primary

#645CAA

secondary

#BFC2A0

accent

#C860BD

background

#F9F8FC

surface

#F2F0F8

border

#CCCBD1

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645CAA

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

Preview Lab → · Contrast checker → · Palette generator →