#3644BF#3644BF

#3644BF is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.7% C 0.191 H 271.4°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#3644BF
RGB	rgb(54, 68, 191)
HSL	hsl(234, 56%, 48%)
HSV	hsv(234, 72%, 75%)
CMYK	cmyk(71.7%, 64.4%, 0%, 25.1%)
CIE-LAB	lab(35.36, 36.17, -66.03)
CIE-LCH	lch(35.36, 75.29, 298.71°)
OKLab	oklab(45.73% 0.0047 -0.1908)
OKLCH	oklch(45.73% 0.191 271.4)
XYZ	xyz(12.9892, 8.6788, 50.2707)
Luminance	0.0868 (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

#3644BF #BFB136

analogous

#3688BF #3644BF #6D36BF

triadic

#3644BF #BF3644 #44BF36

tetradic

#3644BF #BF3688 #BFB136 #36BF6D

square

#3644BF #BF3688 #BFB136 #36BF6D

split-complementary

#3644BF #BF6D36 #88BF36

monochromatic

#1B2260 #29338F #3644BF #606CD2 #9098E0

Accessibility & contrast

On white

7.68

#3644BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#3644BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3644BF

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3644BF	#FFFFFF	#000000	##FFFFFF
##3644BF	1.00	7.68	2.74	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC3

Deuteranopia (green-blind)

#004DBD

Tritanopia (blue-blind)

#00647B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3644bf;
/* rgb */ color: rgb(54, 68, 191);
/* oklch */ color: oklch(45.7% 0.191 271.4);

Tailwind

colors: {
  custom: {
    50: '#8078d3',
    500: '#3644bf',
    950: '#000000',
  },
}

SCSS

$custom: #3644bf;
$custom-light: #8078d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3644bf",
  "rgb": {
    "r": 54,
    "g": 68,
    "b": 191
  },
  "hsl": {
    "h": 233.869,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.45725,
    "c": 0.19084,
    "h": 271.4
  },
  "luminance": 0.0868
}

Semantic roles & 50–950 ramp

primary

#3644BF

secondary

#CAC387

accent

#D049DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3644BF

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

Preview Lab → · Contrast checker → · Palette generator →