#3748BE#3748BE

#3748BE is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.4% C 0.185 H 270.9°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#3748BE
RGB	rgb(55, 72, 190)
HSL	hsl(232, 55%, 48%)
HSV	hsv(232, 71%, 75%)
CMYK	cmyk(71.1%, 62.1%, 0%, 25.5%)
CIE-LAB	lab(36.30, 33.41, -63.91)
CIE-LCH	lch(36.30, 72.11, 297.60°)
OKLab	oklab(46.4% 0.003 -0.1845)
OKLCH	oklch(46.4% 0.185 270.9)
XYZ	xyz(13.1840, 9.1633, 49.7791)
Luminance	0.0916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.67

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3748BE #BEAD37

analogous

#378CBE #3748BE #6937BE

triadic

#3748BE #BE3748 #48BE37

tetradic

#3748BE #BE378C #BEAD37 #37BE69

square

#3748BE #BE378C #BEAD37 #37BE69

split-complementary

#3748BE #BE6937 #8CBE37

monochromatic

#1C245F #29368F #3748BE #616FD1 #909ADF

Accessibility & contrast

On white

7.41

#3748BE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3748BE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748BE

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748BE	#FFFFFF	#000000	##FFFFFF
##3748BE	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC2

Deuteranopia (green-blind)

#004FBC

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3748be;
/* rgb */ color: rgb(55, 72, 190);
/* oklch */ color: oklch(46.4% 0.185 270.9);

Tailwind

colors: {
  custom: {
    50: '#807bd3',
    500: '#3748be',
    950: '#000000',
  },
}

SCSS

$custom: #3748be;
$custom-light: #807bd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3748be",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 190
  },
  "hsl": {
    "h": 232.444,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46404,
    "c": 0.18453,
    "h": 270.9
  },
  "luminance": 0.09165
}

Semantic roles & 50–950 ramp

primary

#3748BE

secondary

#CAC187

accent

#CC49DE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3748BE

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

Preview Lab → · Contrast checker → · Palette generator →