#645BA4#645BA4

#645BA4 is a mid, moderate blue. Relative luminance 0.129; OKLCH L 51.4% C 0.113 H 287.4°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#645BA4
RGB	rgb(100, 91, 164)
HSL	hsl(247, 29%, 50%)
HSV	hsv(247, 45%, 64%)
CMYK	cmyk(39%, 44.5%, 0%, 35.7%)
CIE-LAB	lab(42.57, 21.86, -38.30)
CIE-LCH	lch(42.57, 44.10, 299.72°)
OKLab	oklab(51.35% 0.0338 -0.108)
OKLCH	oklch(51.35% 0.113 287.4)
XYZ	xyz(15.6956, 12.8713, 36.7722)
Luminance	0.1287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BA4 #9BA45B

analogous

#5B77A4 #645BA4 #885BA4

triadic

#645BA4 #A4645B #5BA464

tetradic

#645BA4 #A45B77 #9BA45B #5BA488

square

#645BA4 #A45B77 #9BA45B #5BA488

split-complementary

#645BA4 #A4885B #77A45B

monochromatic

#342F55 #4C457D #645BA4 #8982BA #AEAAD0

Accessibility & contrast

On white

5.88

#645BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#645BA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BA4

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BA4	#FFFFFF	#000000	##FFFFFF
##645BA4	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4166A7

Deuteranopia (green-blind)

#4163A2

Tritanopia (blue-blind)

#536977

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #645ba4;
/* rgb */ color: rgb(100, 91, 164);
/* oklch */ color: oklch(51.4% 0.113 287.4);

Tailwind

colors: {
  custom: {
    50: '#9389bf',
    500: '#645ba4',
    950: '#000000',
  },
}

SCSS

$custom: #645ba4;
$custom-light: #9389bf;
$custom-dark: #000000;

JSON

{
  "hex": "#645ba4",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 164
  },
  "hsl": {
    "h": 247.397,
    "s": 28.627,
    "l": 50
  },
  "oklch": {
    "l": 0.51354,
    "c": 0.11314,
    "h": 287.4
  },
  "luminance": 0.12872
}

Semantic roles & 50–950 ramp

primary

#645BA4

secondary

#BABE9D

accent

#C563B9

background

#F9F8FB

surface

#F2F0F7

border

#CCCBD0

text

#0D0B12

muted

#7E7C81

Preview Lab

Preview with #645BA4

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

Preview Lab → · Contrast checker → · Palette generator →