#3645BB#3645BB

#3645BB is a mid, vivid blue. Relative luminance 0.086; OKLCH L 45.5% C 0.184 H 271.3°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#3645BB
RGB	rgb(54, 69, 187)
HSL	hsl(233, 55%, 47%)
HSV	hsv(233, 71%, 73%)
CMYK	cmyk(71.1%, 63.1%, 0%, 26.7%)
CIE-LAB	lab(35.26, 34.12, -63.85)
CIE-LCH	lch(35.26, 72.39, 298.12°)
OKLab	oklab(45.54% 0.0043 -0.1844)
OKLCH	oklch(45.54% 0.184 271.3)
XYZ	xyz(12.6160, 8.6271, 48.0044)
Luminance	0.0863 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3645BB #BBAC36

analogous

#3688BB #3645BB #6936BB

triadic

#3645BB #BB3645 #45BB36

tetradic

#3645BB #BB3688 #BBAC36 #36BB69

square

#3645BB #BB3688 #BBAC36 #36BB69

split-complementary

#3645BB #BB6936 #88BB36

monochromatic

#1B225C #28338C #3645BB #5E6BD0 #8D96DE

Accessibility & contrast

On white

7.70

#3645BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#3645BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3645BB

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3645BB	#FFFFFF	#000000	##FFFFFF
##3645BB	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#004DB9

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3645bb;
/* rgb */ color: rgb(54, 69, 187);
/* oklch */ color: oklch(45.5% 0.184 271.3);

Tailwind

colors: {
  custom: {
    50: '#7f78d0',
    500: '#3645bb',
    950: '#000000',
  },
}

SCSS

$custom: #3645bb;
$custom-light: #7f78d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3645bb",
  "rgb": {
    "r": 54,
    "g": 69,
    "b": 187
  },
  "hsl": {
    "h": 233.233,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.45544,
    "c": 0.18443,
    "h": 271.3
  },
  "luminance": 0.08628
}

Semantic roles & 50–950 ramp

primary

#3645BB

secondary

#C9C184

accent

#CE49DF

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3645BB

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

Preview Lab → · Contrast checker → · Palette generator →