#3756B8#3756B8

#3756B8 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.6% C 0.159 H 267.0°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#3756B8
RGB	rgb(55, 86, 184)
HSL	hsl(226, 54%, 47%)
HSV	hsv(226, 70%, 72%)
CMYK	cmyk(70.1%, 53.3%, 0%, 27.8%)
CIE-LAB	lab(39.46, 22.17, -55.25)
CIE-LCH	lch(39.46, 59.53, 291.87°)
OKLab	oklab(48.62% -0.0082 -0.1589)
OKLCH	oklch(48.62% 0.159 267)
XYZ	xyz(13.5521, 10.9271, 46.7330)
Luminance	0.1093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3756B8 #B89937

analogous

#3797B8 #3756B8 #5837B8

triadic

#3756B8 #B83756 #56B837

tetradic

#3756B8 #B83797 #B89937 #37B858

square

#3756B8 #B83797 #B89937 #37B858

split-complementary

#3756B8 #B85837 #97B837

monochromatic

#1B2A5A #294089 #3756B8 #5D79CF #8DA0DD

Accessibility & contrast

On white

6.59

#3756B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#3756B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3756B8

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3756B8	#FFFFFF	#000000	##FFFFFF
##3756B8	1.00	6.59	3.19	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1163BB

Deuteranopia (green-blind)

#0057B6

Tritanopia (blue-blind)

#006D7E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3756b8;
/* rgb */ color: rgb(55, 86, 184);
/* oklch */ color: oklch(48.6% 0.159 267.0);

Tailwind

colors: {
  custom: {
    50: '#7e85ce',
    500: '#3756b8',
    950: '#000000',
  },
}

SCSS

$custom: #3756b8;
$custom-light: #7e85ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3756b8",
  "rgb": {
    "r": 55,
    "g": 86,
    "b": 184
  },
  "hsl": {
    "h": 225.581,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4862,
    "c": 0.15909,
    "h": 267
  },
  "luminance": 0.10928
}

Semantic roles & 50–950 ramp

primary

#3756B8

secondary

#C7B784

accent

#BA4ADD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3756B8

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

Preview Lab → · Contrast checker → · Palette generator →