#3749BF#3749BF

#3749BF is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.7% C 0.185 H 270.7°. Best body text is #FFFFFF at 7.32:1 contrast (WCAG AA passes).

Color values

HEX	#3749BF
RGB	rgb(55, 73, 191)
HSL	hsl(232, 55%, 48%)
HSV	hsv(232, 71%, 75%)
CMYK	cmyk(71.2%, 61.8%, 0%, 25.1%)
CIE-LAB	lab(36.63, 33.13, -63.95)
CIE-LCH	lch(36.63, 72.02, 297.38°)
OKLab	oklab(46.67% 0.0023 -0.1846)
OKLCH	oklch(46.67% 0.185 270.7)
XYZ	xyz(13.3589, 9.3376, 50.3784)
Luminance	0.0934 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749BF #BFAD37

analogous

#378DBF #3749BF #6937BF

triadic

#3749BF #BF3749 #49BF37

tetradic

#3749BF #BF378D #BFAD37 #37BF69

square

#3749BF #BF378D #BFAD37 #37BF69

split-complementary

#3749BF #BF6937 #8DBF37

monochromatic

#1C2560 #29378F #3749BF #6270D2 #919BDF

Accessibility & contrast

On white

7.32

#3749BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3749BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749BF

7.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749BF	#FFFFFF	#000000	##FFFFFF
##3749BF	1.00	7.32	2.87	7.32
#FFFFFF	7.32	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC3

Deuteranopia (green-blind)

#0050BD

Tritanopia (blue-blind)

#00677D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3749bf;
/* rgb */ color: rgb(55, 73, 191);
/* oklch */ color: oklch(46.7% 0.185 270.7);

Tailwind

colors: {
  custom: {
    50: '#807bd3',
    500: '#3749bf',
    950: '#000000',
  },
}

SCSS

$custom: #3749bf;
$custom-light: #807bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3749bf",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 191
  },
  "hsl": {
    "h": 232.059,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.46672,
    "c": 0.18464,
    "h": 270.7
  },
  "luminance": 0.09339
}

Semantic roles & 50–950 ramp

primary

#3749BF

secondary

#CAC188

accent

#CB49DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749BF

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

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