#645AA3#645AA3

#645AA3 is a mid, moderate blue. Relative luminance 0.127; OKLCH L 51.1% C 0.113 H 288.0°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#645AA3
RGB	rgb(100, 90, 163)
HSL	hsl(248, 29%, 50%)
HSV	hsv(248, 45%, 64%)
CMYK	cmyk(38.7%, 44.8%, 0%, 36.1%)
CIE-LAB	lab(42.25, 22.19, -38.20)
CIE-LCH	lch(42.25, 44.18, 300.15°)
OKLab	oklab(51.1% 0.035 -0.1077)
OKLCH	oklch(51.1% 0.113 288)
XYZ	xyz(15.5207, 12.6655, 36.2702)
Luminance	0.1267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AA3 #99A35A

analogous

#5A75A3 #645AA3 #895AA3

triadic

#645AA3 #A3645A #5AA364

tetradic

#645AA3 #A35A75 #99A35A #5AA389

square

#645AA3 #A35A75 #99A35A #5AA389

split-complementary

#645AA3 #A3895A #75A35A

monochromatic

#342E54 #4C447C #645AA3 #8981B9 #AEA8CF

Accessibility & contrast

On white

5.94

#645AA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#645AA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AA3

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AA3	#FFFFFF	#000000	##FFFFFF
##645AA3	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4065A6

Deuteranopia (green-blind)

#4062A1

Tritanopia (blue-blind)

#536876

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645aa3;
/* rgb */ color: rgb(100, 90, 163);
/* oklch */ color: oklch(51.1% 0.113 288.0);

Tailwind

colors: {
  custom: {
    50: '#9388be',
    500: '#645aa3',
    950: '#000000',
  },
}

SCSS

$custom: #645aa3;
$custom-light: #9388be;
$custom-dark: #000000;

JSON

{
  "hex": "#645aa3",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 163
  },
  "hsl": {
    "h": 248.219,
    "s": 28.854,
    "l": 49.608
  },
  "oklch": {
    "l": 0.51099,
    "c": 0.11324,
    "h": 288
  },
  "luminance": 0.12666
}

Semantic roles & 50–950 ramp

primary

#645AA3

secondary

#B9BD9C

accent

#C563B8

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645AA3

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

Preview Lab → · Contrast checker → · Palette generator →