#645EA4#645EA4

#645EA4 is a mid, moderate blue. Relative luminance 0.134; OKLCH L 51.9% C 0.108 H 285.9°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#645EA4
RGB	rgb(100, 94, 164)
HSL	hsl(245, 28%, 51%)
HSV	hsv(245, 43%, 64%)
CMYK	cmyk(39%, 42.7%, 0%, 35.7%)
CIE-LAB	lab(43.35, 20.00, -37.06)
CIE-LCH	lch(43.35, 42.11, 298.36°)
OKLab	oklab(51.95% 0.0297 -0.1044)
OKLCH	oklch(51.95% 0.109 285.9)
XYZ	xyz(15.9572, 13.3945, 36.8594)
Luminance	0.1340 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EA4 #9EA45E

analogous

#5E7BA4 #645EA4 #875EA4

triadic

#645EA4 #A4645E #5EA464

tetradic

#645EA4 #A45E7B #9EA45E #5EA487

square

#645EA4 #A45E7B #9EA45E #5EA487

split-complementary

#645EA4 #A4875E #7BA45E

monochromatic

#343157 #4C477E #645EA4 #8A85BA #AFACD0

Accessibility & contrast

On white

5.71

#645EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#645EA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EA4

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EA4	#FFFFFF	#000000	##FFFFFF
##645EA4	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4668A7

Deuteranopia (green-blind)

#4464A2

Tritanopia (blue-blind)

#526C79

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645ea4;
/* rgb */ color: rgb(100, 94, 164);
/* oklch */ color: oklch(51.9% 0.108 285.9);

Tailwind

colors: {
  custom: {
    50: '#938bbf',
    500: '#645ea4',
    950: '#000000',
  },
}

SCSS

$custom: #645ea4;
$custom-light: #938bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#645ea4",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 164
  },
  "hsl": {
    "h": 245.143,
    "s": 27.778,
    "l": 50.588
  },
  "oklch": {
    "l": 0.51948,
    "c": 0.1085,
    "h": 285.9
  },
  "luminance": 0.13395
}

Semantic roles & 50–950 ramp

primary

#645EA4

secondary

#BCBE9F

accent

#C464BC

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645EA4

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

Preview Lab → · Contrast checker → · Palette generator →