#3753B8#3753B8

#3753B8 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.0% C 0.163 H 268.0°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3753B8
RGB	rgb(55, 83, 184)
HSL	hsl(227, 54%, 47%)
HSV	hsv(227, 70%, 72%)
CMYK	cmyk(70.1%, 54.9%, 0%, 27.8%)
CIE-LAB	lab(38.65, 24.13, -56.55)
CIE-LCH	lch(38.65, 61.48, 293.10°)
OKLab	oklab(48.01% -0.0056 -0.1628)
OKLCH	oklch(48.01% 0.163 268)
XYZ	xyz(13.3175, 10.4581, 46.6549)
Luminance	0.1046 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753B8 #B89C37

analogous

#3794B8 #3753B8 #5C37B8

triadic

#3753B8 #B83753 #53B837

tetradic

#3753B8 #B83794 #B89C37 #37B85C

square

#3753B8 #B83794 #B89C37 #37B85C

split-complementary

#3753B8 #B85C37 #94B837

monochromatic

#1B285A #293E89 #3753B8 #5D76CF #8D9EDD

Accessibility & contrast

On white

6.79

#3753B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3753B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753B8

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753B8	#FFFFFF	#000000	##FFFFFF
##3753B8	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BC

Deuteranopia (green-blind)

#0055B6

Tritanopia (blue-blind)

#006B7D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3753b8;
/* rgb */ color: rgb(55, 83, 184);
/* oklch */ color: oklch(48.0% 0.163 268.0);

Tailwind

colors: {
  custom: {
    50: '#7e83ce',
    500: '#3753b8',
    950: '#000000',
  },
}

SCSS

$custom: #3753b8;
$custom-light: #7e83ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3753b8",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 184
  },
  "hsl": {
    "h": 226.977,
    "s": 53.975,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48013,
    "c": 0.16286,
    "h": 268
  },
  "luminance": 0.10459
}

Semantic roles & 50–950 ramp

primary

#3753B8

secondary

#C7B984

accent

#BD4ADD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3753B8

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

Preview Lab → · Contrast checker → · Palette generator →