#645AA4#645AA4

#645AA4 is a mid, moderate blue. Relative luminance 0.127; OKLCH L 51.2% C 0.115 H 287.8°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#645AA4
RGB	rgb(100, 90, 164)
HSL	hsl(248, 29%, 50%)
HSV	hsv(248, 45%, 64%)
CMYK	cmyk(39%, 45.1%, 0%, 35.7%)
CIE-LAB	lab(42.31, 22.48, -38.71)
CIE-LCH	lch(42.31, 44.76, 300.15°)
OKLab	oklab(51.16% 0.0351 -0.1092)
OKLCH	oklch(51.16% 0.115 287.8)
XYZ	xyz(15.6107, 12.7015, 36.7439)
Luminance	0.1270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AA4 #9AA45A

analogous

#5A75A4 #645AA4 #895AA4

triadic

#645AA4 #A4645A #5AA464

tetradic

#645AA4 #A45A75 #9AA45A #5AA489

square

#645AA4 #A45A75 #9AA45A #5AA489

split-complementary

#645AA4 #A4895A #75A45A

monochromatic

#342F55 #4C447C #645AA4 #8981BA #AEA9D0

Accessibility & contrast

On white

5.93

#645AA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#645AA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AA4

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AA4	#FFFFFF	#000000	##FFFFFF
##645AA4	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4066A7

Deuteranopia (green-blind)

#3F62A2

Tritanopia (blue-blind)

#536977

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645aa4;
/* rgb */ color: rgb(100, 90, 164);
/* oklch */ color: oklch(51.2% 0.115 287.8);

Tailwind

colors: {
  custom: {
    50: '#9388bf',
    500: '#645aa4',
    950: '#000000',
  },
}

SCSS

$custom: #645aa4;
$custom-light: #9388bf;
$custom-dark: #000000;

JSON

{
  "hex": "#645aa4",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 164
  },
  "hsl": {
    "h": 248.108,
    "s": 29.134,
    "l": 49.804
  },
  "oklch": {
    "l": 0.51159,
    "c": 0.11469,
    "h": 287.8
  },
  "luminance": 0.12702
}

Semantic roles & 50–950 ramp

primary

#645AA4

secondary

#B9BE9C

accent

#C562B8

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645AA4

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

Preview Lab → · Contrast checker → · Palette generator →