#3749C0#3749C0

#3749C0 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.8% C 0.186 H 270.7°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#3749C0
RGB	rgb(55, 73, 192)
HSL	hsl(232, 55%, 48%)
HSV	hsv(232, 71%, 75%)
CMYK	cmyk(71.4%, 62%, 0%, 24.7%)
CIE-LAB	lab(36.71, 33.48, -64.40)
CIE-LCH	lch(36.71, 72.59, 297.47°)
OKLab	oklab(46.76% 0.0023 -0.1859)
OKLCH	oklch(46.76% 0.186 270.7)
XYZ	xyz(13.4693, 9.3817, 50.9600)
Luminance	0.0938 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749C0 #C0AE37

analogous

#378DC0 #3749C0 #6937C0

triadic

#3749C0 #C03749 #49C037

tetradic

#3749C0 #C0378D #C0AE37 #37C069

square

#3749C0 #C0378D #C0AE37 #37C069

split-complementary

#3749C0 #C06937 #8DC037

monochromatic

#1C2561 #293790 #3749C0 #6271D2 #929CE0

Accessibility & contrast

On white

7.30

#3749C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3749C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749C0

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749C0	#FFFFFF	#000000	##FFFFFF
##3749C0	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC4

Deuteranopia (green-blind)

#0050BE

Tritanopia (blue-blind)

#00677D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3749c0;
/* rgb */ color: rgb(55, 73, 192);
/* oklch */ color: oklch(46.8% 0.186 270.7);

Tailwind

colors: {
  custom: {
    50: '#807bd4',
    500: '#3749c0',
    950: '#000000',
  },
}

SCSS

$custom: #3749c0;
$custom-light: #807bd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3749c0",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 192
  },
  "hsl": {
    "h": 232.117,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.46759,
    "c": 0.18596,
    "h": 270.7
  },
  "luminance": 0.09383
}

Semantic roles & 50–950 ramp

primary

#3749C0

secondary

#CBC288

accent

#CB49DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749C0

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

Preview Lab → · Contrast checker → · Palette generator →