#645BC5#645BC5

#645BC5 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 53.5% C 0.160 H 283.4°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#645BC5
RGB	rgb(100, 91, 197)
HSL	hsl(245, 48%, 56%)
HSV	hsv(245, 54%, 77%)
CMYK	cmyk(49.2%, 53.8%, 0%, 22.7%)
CIE-LAB	lab(44.55, 31.73, -54.45)
CIE-LCH	lch(44.55, 63.02, 300.23°)
OKLab	oklab(53.48% 0.0371 -0.1554)
OKLCH	oklch(53.48% 0.16 283.4)
XYZ	xyz(19.0716, 14.2217, 54.5526)
Luminance	0.1422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645BC5 #BCC55B

analogous

#5B87C5 #645BC5 #995BC5

triadic

#645BC5 #C5645B #5BC564

tetradic

#645BC5 #C55B87 #BCC55B #5BC599

square

#645BC5 #C55B87 #BCC55B #5BC599

split-complementary

#645BC5 #C5995B #87C55B

monochromatic

#322B7A #443BA8 #645BC5 #8F88D5 #B9B5E5

Accessibility & contrast

On white

5.46

#645BC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#645BC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645BC5

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645BC5	#FFFFFF	#000000	##FFFFFF
##645BC5	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#216DC9

Deuteranopia (green-blind)

#1966C3

Tritanopia (blue-blind)

#417287

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #645bc5;
/* rgb */ color: rgb(100, 91, 197);
/* oklch */ color: oklch(53.5% 0.160 283.4);

Tailwind

colors: {
  custom: {
    50: '#9789d7',
    500: '#645bc5',
    950: '#000000',
  },
}

SCSS

$custom: #645bc5;
$custom-light: #9789d7;
$custom-dark: #000000;

JSON

{
  "hex": "#645bc5",
  "rgb": {
    "r": 100,
    "g": 91,
    "b": 197
  },
  "hsl": {
    "h": 245.094,
    "s": 47.748,
    "l": 56.471
  },
  "oklch": {
    "l": 0.53481,
    "c": 0.15973,
    "h": 283.4
  },
  "luminance": 0.14223
}

Semantic roles & 50–950 ramp

primary

#645BC5

secondary

#D0D4A8

accent

#D750CC

background

#F9F8FD

surface

#F2F0FA

border

#CCCBD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #645BC5

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

Preview Lab → · Contrast checker → · Palette generator →