#3756BB#3756BB

#3756BB is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.163 H 267.2°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#3756BB
RGB	rgb(55, 86, 187)
HSL	hsl(226, 55%, 47%)
HSV	hsv(226, 71%, 73%)
CMYK	cmyk(70.6%, 54%, 0%, 26.7%)
CIE-LAB	lab(39.67, 23.27, -56.66)
CIE-LCH	lch(39.67, 61.25, 292.33°)
OKLab	oklab(48.85% -0.0079 -0.163)
OKLCH	oklch(48.85% 0.163 267.2)
XYZ	xyz(13.8699, 11.0542, 48.4068)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756BB #BB9C37

analogous

#3798BB #3756BB #5A37BB

triadic

#3756BB #BB3756 #56BB37

tetradic

#3756BB #BB3798 #BB9C37 #37BB5A

square

#3756BB #BB3798 #BB9C37 #37BB5A

split-complementary

#3756BB #BB5A37 #98BB37

monochromatic

#1B2B5C #29408C #3756BB #5F7AD0 #8EA1DE

Accessibility & contrast

On white

6.54

#3756BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#3756BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756BB

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756BB	#FFFFFF	#000000	##FFFFFF
##3756BB	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0664BF

Deuteranopia (green-blind)

#0058B9

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3756bb;
/* rgb */ color: rgb(55, 86, 187);
/* oklch */ color: oklch(48.9% 0.163 267.2);

Tailwind

colors: {
  custom: {
    50: '#7e85d0',
    500: '#3756bb',
    950: '#000000',
  },
}

SCSS

$custom: #3756bb;
$custom-light: #7e85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3756bb",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 187
  },
  "hsl": {
    "h": 225.909,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4885,
    "c": 0.16322,
    "h": 267.2
  },
  "luminance": 0.11056
}

Semantic roles & 50–950 ramp

primary

#3756BB

secondary

#C9B985

accent

#BB4ADE

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3756BB

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

Preview Lab → · Contrast checker → · Palette generator →