#645EBF#645EBF

#645EBF is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.6% C 0.147 H 283.0°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#645EBF
RGB	rgb(100, 94, 191)
HSL	hsl(244, 43%, 56%)
HSV	hsv(244, 51%, 75%)
CMYK	cmyk(47.6%, 50.8%, 0%, 25.1%)
CIE-LAB	lab(44.91, 28.07, -50.40)
CIE-LCH	lch(44.91, 57.69, 299.11°)
OKLab	oklab(53.63% 0.0332 -0.1434)
OKLCH	oklch(53.63% 0.147 283)
XYZ	xyz(18.6594, 14.4754, 51.0910)
Luminance	0.1448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645EBF #B9BF5E

analogous

#5E88BF #645EBF #945EBF

triadic

#645EBF #BF645E #5EBF64

tetradic

#645EBF #BF5E88 #B9BF5E #5EBF94

square

#645EBF #BF5E88 #B9BF5E #5EBF94

split-complementary

#645EBF #BF945E #88BF5E

monochromatic

#332E74 #4640A0 #645EBF #8E8AD0 #B8B6E2

Accessibility & contrast

On white

5.39

#645EBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#645EBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645EBF

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645EBF	#FFFFFF	#000000	##FFFFFF
##645EBF	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#316DC2

Deuteranopia (green-blind)

#2B67BD

Tritanopia (blue-blind)

#447385

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645ebf;
/* rgb */ color: rgb(100, 94, 191);
/* oklch */ color: oklch(53.6% 0.147 283.0);

Tailwind

colors: {
  custom: {
    50: '#968bd3',
    500: '#645ebf',
    950: '#000000',
  },
}

SCSS

$custom: #645ebf;
$custom-light: #968bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#645ebf",
  "rgb": {
    "r": 100,
    "g": 94,
    "b": 191
  },
  "hsl": {
    "h": 243.711,
    "s": 43.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.53627,
    "c": 0.14724,
    "h": 283
  },
  "luminance": 0.14476
}

Semantic roles & 50–950 ramp

primary

#645EBF

secondary

#CED0A8

accent

#D355CB

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0C14

muted

#7E7D83

Preview Lab

Preview with #645EBF

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

Preview Lab → · Contrast checker → · Palette generator →