#645EA3#645EA3

#645EA3 is a mid, moderate blue. Relative luminance 0.134; OKLCH L 51.9% C 0.107 H 286.0°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#645EA3
RGB	rgb(100, 94, 163)
HSL	hsl(245, 27%, 50%)
HSV	hsv(245, 42%, 64%)
CMYK	cmyk(38.7%, 42.3%, 0%, 36.1%)
CIE-LAB	lab(43.30, 19.71, -36.55)
CIE-LCH	lch(43.30, 41.53, 298.34°)
OKLab	oklab(51.89% 0.0295 -0.1029)
OKLCH	oklch(51.89% 0.107 286)
XYZ	xyz(15.8673, 13.3586, 36.3857)
Luminance	0.1336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EA3 #9DA35E

analogous

#5E7AA3 #645EA3 #865EA3

triadic

#645EA3 #A3645E #5EA364

tetradic

#645EA3 #A35E7A #9DA35E #5EA386

square

#645EA3 #A35E7A #9DA35E #5EA386

split-complementary

#645EA3 #A3865E #7AA35E

monochromatic

#343156 #4C477D #645EA3 #8985B9 #AFACD0

Accessibility & contrast

On white

5.72

#645EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#645EA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EA3

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EA3	#FFFFFF	#000000	##FFFFFF
##645EA3	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4768A6

Deuteranopia (green-blind)

#4564A1

Tritanopia (blue-blind)

#536B78

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #645ea3;
/* rgb */ color: rgb(100, 94, 163);
/* oklch */ color: oklch(51.9% 0.107 286.0);

Tailwind

colors: {
  custom: {
    50: '#938bbe',
    500: '#645ea3',
    950: '#000000',
  },
}

SCSS

$custom: #645ea3;
$custom-light: #938bbe;
$custom-dark: #000000;

JSON

{
  "hex": "#645ea3",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 163
  },
  "hsl": {
    "h": 245.217,
    "s": 27.273,
    "l": 50.392
  },
  "oklch": {
    "l": 0.51891,
    "c": 0.10702,
    "h": 286
  },
  "luminance": 0.13359
}

Semantic roles & 50–950 ramp

primary

#645EA3

secondary

#BBBE9F

accent

#C464BB

background

#F9F8FB

surface

#F1F0F7

border

#CBCBD0

text

#0D0C12

muted

#7E7D81

Preview Lab

Preview with #645EA3

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

Preview Lab → · Contrast checker → · Palette generator →