#645AA6#645AA6

#645AA6 is a mid, moderate blue. Relative luminance 0.128; OKLCH L 51.3% C 0.118 H 287.5°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#645AA6
RGB	rgb(100, 90, 166)
HSL	hsl(248, 30%, 50%)
HSV	hsv(248, 46%, 65%)
CMYK	cmyk(39.8%, 45.8%, 0%, 34.9%)
CIE-LAB	lab(42.42, 23.06, -39.72)
CIE-LCH	lch(42.42, 45.93, 300.14°)
OKLab	oklab(51.28% 0.0354 -0.1121)
OKLCH	oklch(51.28% 0.118 287.5)
XYZ	xyz(15.7927, 12.7743, 37.7026)
Luminance	0.1278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645AA6 #9CA65A

analogous

#5A76A6 #645AA6 #8A5AA6

triadic

#645AA6 #A6645A #5AA664

tetradic

#645AA6 #A65A76 #9CA65A #5AA68A

square

#645AA6 #A65A76 #9CA65A #5AA68A

split-complementary

#645AA6 #A68A5A #76A65A

monochromatic

#342F57 #4C447F #645AA6 #8982BB #AFAAD1

Accessibility & contrast

On white

5.91

#645AA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#645AA6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645AA6

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645AA6	#FFFFFF	#000000	##FFFFFF
##645AA6	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E66A9

Deuteranopia (green-blind)

#3E62A4

Tritanopia (blue-blind)

#526978

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645aa6;
/* rgb */ color: rgb(100, 90, 166);
/* oklch */ color: oklch(51.3% 0.118 287.5);

Tailwind

colors: {
  custom: {
    50: '#9388c1',
    500: '#645aa6',
    950: '#000000',
  },
}

SCSS

$custom: #645aa6;
$custom-light: #9388c1;
$custom-dark: #000000;

JSON

{
  "hex": "#645aa6",
  "rgb": {
    "r": 100,
    "g": 90,
    "b": 166
  },
  "hsl": {
    "h": 247.895,
    "s": 29.921,
    "l": 50.196
  },
  "oklch": {
    "l": 0.51279,
    "c": 0.1176,
    "h": 287.5
  },
  "luminance": 0.12775
}

Semantic roles & 50–950 ramp

primary

#645AA6

secondary

#BABF9D

accent

#C662B9

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645AA6

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

Preview Lab → · Contrast checker → · Palette generator →