#3746BB#3746BB

#3746BB is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.8% C 0.183 H 271.4°. Best body text is #FFFFFF at 7.62:1 contrast (WCAG AA passes).

Color values

HEX	#3746BB
RGB	rgb(55, 70, 187)
HSL	hsl(233, 55%, 47%)
HSV	hsv(233, 71%, 73%)
CMYK	cmyk(70.6%, 62.6%, 0%, 26.7%)
CIE-LAB	lab(35.56, 33.61, -63.36)
CIE-LCH	lch(35.56, 71.72, 297.95°)
OKLab	oklab(45.78% 0.0046 -0.1829)
OKLCH	oklch(45.78% 0.183 271.4)
XYZ	xyz(12.7323, 8.7791, 48.0276)
Luminance	0.0878 (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

#3746BB #BBAC37

analogous

#3788BB #3746BB #6A37BB

triadic

#3746BB #BB3746 #46BB37

tetradic

#3746BB #BB3788 #BBAC37 #37BB6A

square

#3746BB #BB3788 #BBAC37 #37BB6A

split-complementary

#3746BB #BB6A37 #88BB37

monochromatic

#1B235C #29348C #3746BB #5F6CD0 #8E98DE

Accessibility & contrast

On white

7.62

#3746BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#3746BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3746BB

7.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3746BB	#FFFFFF	#000000	##FFFFFF
##3746BB	1.00	7.62	2.76	7.62
#FFFFFF	7.62	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABF

Deuteranopia (green-blind)

#004EB9

Tritanopia (blue-blind)

#00647A

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3746bb;
/* rgb */ color: rgb(55, 70, 187);
/* oklch */ color: oklch(45.8% 0.183 271.4);

Tailwind

colors: {
  custom: {
    50: '#7f79d0',
    500: '#3746bb',
    950: '#000000',
  },
}

SCSS

$custom: #3746bb;
$custom-light: #7f79d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3746bb",
  "rgb": {
    "r": 55,
    "g": 70,
    "b": 187
  },
  "hsl": {
    "h": 233.182,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.45779,
    "c": 0.18297,
    "h": 271.4
  },
  "luminance": 0.0878
}

Semantic roles & 50–950 ramp

primary

#3746BB

secondary

#C9C185

accent

#CD4ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3746BB

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

Preview Lab → · Contrast checker → · Palette generator →