#645EBC#645EBC

#645EBC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.4% C 0.143 H 283.3°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#645EBC
RGB	rgb(100, 94, 188)
HSL	hsl(244, 41%, 55%)
HSV	hsv(244, 50%, 74%)
CMYK	cmyk(46.8%, 50%, 0%, 26.3%)
CIE-LAB	lab(44.72, 27.15, -48.95)
CIE-LCH	lch(44.72, 55.98, 299.01°)
OKLab	oklab(53.43% 0.0329 -0.1392)
OKLCH	oklch(53.43% 0.143 283.3)
XYZ	xyz(18.3326, 14.3447, 49.3700)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EBC #B6BC5E

analogous

#5E87BC #645EBC #935EBC

triadic

#645EBC #BC645E #5EBC64

tetradic

#645EBC #BC5E87 #B6BC5E #5EBC93

square

#645EBC #BC5E87 #B6BC5E #5EBC93

split-complementary

#645EBC #BC935E #87BC5E

monochromatic

#332F71 #47419C #645EBC #8E89CE #B7B4E0

Accessibility & contrast

On white

5.43

#645EBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#645EBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EBC

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EBC	#FFFFFF	#000000	##FFFFFF
##645EBC	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346DBF

Deuteranopia (green-blind)

#2F67BA

Tritanopia (blue-blind)

#467284

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645ebc;
/* rgb */ color: rgb(100, 94, 188);
/* oklch */ color: oklch(53.4% 0.143 283.3);

Tailwind

colors: {
  custom: {
    50: '#958bd1',
    500: '#645ebc',
    950: '#000000',
  },
}

SCSS

$custom: #645ebc;
$custom-light: #958bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#645ebc",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 188
  },
  "hsl": {
    "h": 243.83,
    "s": 41.228,
    "l": 55.294
  },
  "oklch": {
    "l": 0.53429,
    "c": 0.14303,
    "h": 283.3
  },
  "luminance": 0.14346
}

Semantic roles & 50–950 ramp

primary

#645EBC

secondary

#CCCFA7

accent

#D157C9

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #645EBC

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

Preview Lab → · Contrast checker → · Palette generator →