#645E8A#645E8A

#645E8A is a mid, moderate blue. Relative luminance 0.126; OKLCH L 50.6% C 0.069 H 289.9°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#645E8A
RGB	rgb(100, 94, 138)
HSL	hsl(248, 19%, 45%)
HSV	hsv(248, 32%, 54%)
CMYK	cmyk(27.5%, 31.9%, 0%, 45.9%)
CIE-LAB	lab(42.08, 12.75, -23.52)
CIE-LCH	lch(42.08, 26.75, 298.46°)
OKLab	oklab(50.56% 0.0236 -0.0652)
OKLCH	oklch(50.56% 0.069 289.9)
XYZ	xyz(13.8445, 12.5495, 25.7327)
Luminance	0.1255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645E8A #848A5E

analogous

#5E6E8A #645E8A #7A5E8A

triadic

#645E8A #8A645E #5E8A64

tetradic

#645E8A #8A5E6E #848A5E #5E8A7A

square

#645E8A #8A5E6E #848A5E #5E8A7A

split-complementary

#645E8A #8A7A5E #6E8A5E

monochromatic

#2F2C41 #4A4566 #645E8A #847EA7 #A6A2C0

Accessibility & contrast

On white

5.98

#645E8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#645E8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645E8A

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645E8A	#FFFFFF	#000000	##FFFFFF
##645E8A	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52648C

Deuteranopia (green-blind)

#526289

Tritanopia (blue-blind)

#5C666E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #645e8a;
/* rgb */ color: rgb(100, 94, 138);
/* oklch */ color: oklch(50.6% 0.069 289.9);

Tailwind

colors: {
  custom: {
    50: '#918bac',
    500: '#645e8a',
    950: '#000000',
  },
}

SCSS

$custom: #645e8a;
$custom-light: #918bac;
$custom-dark: #000000;

JSON

{
  "hex": "#645e8a",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 138
  },
  "hsl": {
    "h": 248.182,
    "s": 18.966,
    "l": 45.49
  },
  "oklch": {
    "l": 0.50555,
    "c": 0.06933,
    "h": 289.9
  },
  "luminance": 0.1255
}

Semantic roles & 50–950 ramp

primary

#645E8A

secondary

#ABAE96

accent

#BC6CB1

background

#F8F8FA

surface

#F0F0F4

border

#CBCBCE

text

#0D0C10

muted

#7D7D7F

Preview Lab

Preview with #645E8A

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

Preview Lab → · Contrast checker → · Palette generator →