#3745BD#3745BD

#3745BD is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.8% C 0.187 H 271.6°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#3745BD
RGB	rgb(55, 69, 189)
HSL	hsl(234, 55%, 48%)
HSV	hsv(234, 71%, 74%)
CMYK	cmyk(70.9%, 63.5%, 0%, 25.9%)
CIE-LAB	lab(35.48, 34.96, -64.65)
CIE-LCH	lch(35.48, 73.50, 298.40°)
OKLab	oklab(45.78% 0.0052 -0.1867)
OKLCH	oklch(45.78% 0.187 271.6)
XYZ	xyz(12.8859, 8.7413, 49.1424)
Luminance	0.0874 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3745BD #BDAF37

analogous

#3788BD #3745BD #6C37BD

triadic

#3745BD #BD3745 #45BD37

tetradic

#3745BD #BD3788 #BDAF37 #37BD6C

square

#3745BD #BD3788 #BDAF37 #37BD6C

split-complementary

#3745BD #BD6C37 #88BD37

monochromatic

#1B225E #29348E #3745BD #606CD1 #9098DF

Accessibility & contrast

On white

7.64

#3745BD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#3745BD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3745BD

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3745BD	#FFFFFF	#000000	##FFFFFF
##3745BD	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AC1

Deuteranopia (green-blind)

#004DBB

Tritanopia (blue-blind)

#00647A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #3745bd;
/* rgb */ color: rgb(55, 69, 189);
/* oklch */ color: oklch(45.8% 0.187 271.6);

Tailwind

colors: {
  custom: {
    50: '#8078d2',
    500: '#3745bd',
    950: '#000000',
  },
}

SCSS

$custom: #3745bd;
$custom-light: #8078d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3745bd",
  "rgb": {
    "r": 55,
    "g": 69,
    "b": 189
  },
  "hsl": {
    "h": 233.731,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.45777,
    "c": 0.18679,
    "h": 271.6
  },
  "luminance": 0.08743
}

Semantic roles & 50–950 ramp

primary

#3745BD

secondary

#C9C286

accent

#CF4ADE

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3745BD

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

Preview Lab → · Contrast checker → · Palette generator →