#3749BE#3749BE

#3749BE is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.6% C 0.183 H 270.7°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#3749BE
RGB	rgb(55, 73, 190)
HSL	hsl(232, 55%, 48%)
HSV	hsv(232, 71%, 75%)
CMYK	cmyk(71.1%, 61.6%, 0%, 25.5%)
CIE-LAB	lab(36.54, 32.77, -63.50)
CIE-LCH	lch(36.54, 71.46, 297.30°)
OKLab	oklab(46.59% 0.0023 -0.1833)
OKLCH	oklch(46.59% 0.183 270.7)
XYZ	xyz(13.2492, 9.2937, 49.8008)
Luminance	0.0930 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749BE #BEAC37

analogous

#378CBE #3749BE #6837BE

triadic

#3749BE #BE3749 #49BE37

tetradic

#3749BE #BE378C #BEAC37 #37BE68

square

#3749BE #BE378C #BEAC37 #37BE68

split-complementary

#3749BE #BE6837 #8CBE37

monochromatic

#1C255F #29378F #3749BE #6170D1 #909BDF

Accessibility & contrast

On white

7.35

#3749BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3749BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749BE

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749BE	#FFFFFF	#000000	##FFFFFF
##3749BE	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC2

Deuteranopia (green-blind)

#0050BC

Tritanopia (blue-blind)

#00677C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3749be;
/* rgb */ color: rgb(55, 73, 190);
/* oklch */ color: oklch(46.6% 0.183 270.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3749be",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 190
  },
  "hsl": {
    "h": 232,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46586,
    "c": 0.18332,
    "h": 270.7
  },
  "luminance": 0.09295
}

Semantic roles & 50–950 ramp

primary

#3749BE

secondary

#CAC187

accent

#CB49DE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749BE

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

Preview Lab → · Contrast checker → · Palette generator →