#3643BC#3643BC

#3643BC is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.3% C 0.188 H 271.7°. Best body text is #FFFFFF at 7.82:1 contrast (WCAG AA passes).

Color values

HEX	#3643BC
RGB	rgb(54, 67, 188)
HSL	hsl(234, 55%, 47%)
HSV	hsv(234, 71%, 74%)
CMYK	cmyk(71.3%, 64.4%, 0%, 26.3%)
CIE-LAB	lab(34.86, 35.74, -65.08)
CIE-LCH	lch(34.86, 74.25, 298.77°)
OKLab	oklab(45.28% 0.0056 -0.188)
OKLCH	oklch(45.28% 0.188 271.7)
XYZ	xyz(12.6025, 8.4282, 48.5298)
Luminance	0.0843 (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

#3643BC #BCAF36

analogous

#3686BC #3643BC #6C36BC

triadic

#3643BC #BC3643 #43BC36

tetradic

#3643BC #BC3686 #BCAF36 #36BC6C

square

#3643BC #BC3686 #BCAF36 #36BC6C

split-complementary

#3643BC #BC6C36 #86BC36

monochromatic

#1B215D #28328C #3643BC #5E69D1 #8E96DF

Accessibility & contrast

On white

7.82

#3643BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3643BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3643BC

7.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3643BC	#FFFFFF	#000000	##FFFFFF
##3643BC	1.00	7.82	2.69	7.82
#FFFFFF	7.82	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3643bc;
/* rgb */ color: rgb(54, 67, 188);
/* oklch */ color: oklch(45.3% 0.188 271.7);

Tailwind

colors: {
  custom: {
    50: '#7f77d1',
    500: '#3643bc',
    950: '#000000',
  },
}

SCSS

$custom: #3643bc;
$custom-light: #7f77d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3643bc",
  "rgb": {
    "r": 54,
    "g": 67,
    "b": 188
  },
  "hsl": {
    "h": 234.179,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45279,
    "c": 0.1881,
    "h": 271.7
  },
  "luminance": 0.08429
}

Semantic roles & 50–950 ramp

primary

#3643BC

secondary

#C9C285

accent

#D049DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #3643BC

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

Preview Lab → · Contrast checker → · Palette generator →