#645FBC#645FBC

#645FBC is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.6% C 0.142 H 282.9°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#645FBC
RGB	rgb(100, 95, 188)
HSL	hsl(243, 41%, 55%)
HSV	hsv(243, 49%, 74%)
CMYK	cmyk(46.8%, 49.5%, 0%, 26.3%)
CIE-LAB	lab(44.97, 26.54, -48.55)
CIE-LCH	lch(44.97, 55.33, 298.66°)
OKLab	oklab(53.62% 0.0317 -0.138)
OKLCH	oklch(53.62% 0.142 282.9)
XYZ	xyz(18.4221, 14.5237, 49.3999)
Luminance	0.1452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#645FBC #B7BC5F

analogous

#5F88BC #645FBC #925FBC

triadic

#645FBC #BC645F #5FBC64

tetradic

#645FBC #BC5F88 #B7BC5F #5FBC92

square

#645FBC #BC5F88 #B7BC5F #5FBC92

split-complementary

#645FBC #BC925F #88BC5F

monochromatic

#332F71 #46419C #645FBC #8E8ACE #B8B5E0

Accessibility & contrast

On white

5.38

#645FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#645FBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #645FBC

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##645FBC	#FFFFFF	#000000	##FFFFFF
##645FBC	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366EBF

Deuteranopia (green-blind)

#3167BA

Tritanopia (blue-blind)

#467384

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #645fbc;
/* rgb */ color: rgb(100, 95, 188);
/* oklch */ color: oklch(53.6% 0.142 282.9);

Tailwind

colors: {
  custom: {
    50: '#958cd1',
    500: '#645fbc',
    950: '#000000',
  },
}

SCSS

$custom: #645fbc;
$custom-light: #958cd1;
$custom-dark: #000000;

JSON

{
  "hex": "#645fbc",
  "rgb": {
    "r": 100,
    "g": 95,
    "b": 188
  },
  "hsl": {
    "h": 243.226,
    "s": 40.969,
    "l": 55.49
  },
  "oklch": {
    "l": 0.53618,
    "c": 0.1416,
    "h": 282.9
  },
  "luminance": 0.14525
}

Semantic roles & 50–950 ramp

primary

#645FBC

secondary

#CDCFA8

accent

#D157CA

background

#F9F8FC

surface

#F2F0F9

border

#CCCBD2

text

#0E0C14

muted

#7E7D82

Preview Lab

Preview with #645FBC

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

Preview Lab → · Contrast checker → · Palette generator →