#3644BC#3644BC

#3644BC is a mid, vivid blue. Relative luminance 0.085; OKLCH L 45.5% C 0.187 H 271.5°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#3644BC
RGB	rgb(54, 68, 188)
HSL	hsl(234, 55%, 47%)
HSV	hsv(234, 71%, 74%)
CMYK	cmyk(71.3%, 63.8%, 0%, 26.3%)
CIE-LAB	lab(35.10, 35.11, -64.69)
CIE-LCH	lch(35.10, 73.61, 298.49°)
OKLab	oklab(45.46% 0.0049 -0.1869)
OKLCH	oklch(45.46% 0.187 271.5)
XYZ	xyz(12.6625, 8.5481, 48.5498)
Luminance	0.0855 (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

#3644BC #BCAE36

analogous

#3687BC #3644BC #6B36BC

triadic

#3644BC #BC3644 #44BC36

tetradic

#3644BC #BC3687 #BCAE36 #36BC6B

square

#3644BC #BC3687 #BCAE36 #36BC6B

split-complementary

#3644BC #BC6B36 #87BC36

monochromatic

#1B225D #28338C #3644BC #5E6AD1 #8E96DF

Accessibility & contrast

On white

7.75

#3644BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#3644BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3644BC

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3644BC	#FFFFFF	#000000	##FFFFFF
##3644BC	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059C0

Deuteranopia (green-blind)

#004CBA

Tritanopia (blue-blind)

#00637A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3644bc;
/* rgb */ color: rgb(54, 68, 188);
/* oklch */ color: oklch(45.5% 0.187 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f78d1',
    500: '#3644bc',
    950: '#000000',
  },
}

SCSS

$custom: #3644bc;
$custom-light: #7f78d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3644bc",
  "rgb": {
    "r": 54,
    "g": 68,
    "b": 188
  },
  "hsl": {
    "h": 233.731,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45455,
    "c": 0.18692,
    "h": 271.5
  },
  "luminance": 0.08549
}

Semantic roles & 50–950 ramp

primary

#3644BC

secondary

#C9C285

accent

#CF49DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3644BC

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

Preview Lab → · Contrast checker → · Palette generator →