#3749BD#3749BD

#3749BD is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.5% C 0.182 H 270.7°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#3749BD
RGB	rgb(55, 73, 189)
HSL	hsl(232, 55%, 48%)
HSV	hsv(232, 71%, 74%)
CMYK	cmyk(70.9%, 61.4%, 0%, 25.9%)
CIE-LAB	lab(36.46, 32.41, -63.05)
CIE-LCH	lch(36.46, 70.89, 297.21°)
OKLab	oklab(46.5% 0.0023 -0.182)
OKLCH	oklch(46.5% 0.182 270.7)
XYZ	xyz(13.1403, 9.2501, 49.2272)
Luminance	0.0925 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749BD #BDAB37

analogous

#378CBD #3749BD #6837BD

triadic

#3749BD #BD3749 #49BD37

tetradic

#3749BD #BD378C #BDAB37 #37BD68

square

#3749BD #BD378C #BDAB37 #37BD68

split-complementary

#3749BD #BD6837 #8CBD37

monochromatic

#1B245E #29378E #3749BD #606FD1 #909ADF

Accessibility & contrast

On white

7.37

#3749BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#3749BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749BD

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749BD	#FFFFFF	#000000	##FFFFFF
##3749BD	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC1

Deuteranopia (green-blind)

#0050BB

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3749bd;
/* rgb */ color: rgb(55, 73, 189);
/* oklch */ color: oklch(46.5% 0.182 270.7);

Tailwind

colors: {
  custom: {
    50: '#807bd2',
    500: '#3749bd',
    950: '#000000',
  },
}

SCSS

$custom: #3749bd;
$custom-light: #807bd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3749bd",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 189
  },
  "hsl": {
    "h": 231.94,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.46499,
    "c": 0.182,
    "h": 270.7
  },
  "luminance": 0.09251
}

Semantic roles & 50–950 ramp

primary

#3749BD

secondary

#C9C086

accent

#CA4ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749BD

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

Preview Lab → · Contrast checker → · Palette generator →