#3753BE#3753BE

#3753BE is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.5% C 0.171 H 268.2°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#3753BE
RGB	rgb(55, 83, 190)
HSL	hsl(228, 55%, 48%)
HSV	hsv(228, 71%, 75%)
CMYK	cmyk(71.1%, 56.3%, 0%, 25.5%)
CIE-LAB	lab(39.10, 26.32, -59.35)
CIE-LCH	lch(39.10, 64.92, 293.92°)
OKLab	oklab(48.49% -0.0053 -0.171)
OKLCH	oklch(48.49% 0.171 268.2)
XYZ	xyz(13.9599, 10.7150, 50.0377)
Luminance	0.1072 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753BE #BEA237

analogous

#3796BE #3753BE #5F37BE

triadic

#3753BE #BE3753 #53BE37

tetradic

#3753BE #BE3796 #BEA237 #37BE5F

square

#3753BE #BE3796 #BEA237 #37BE5F

split-complementary

#3753BE #BE5F37 #96BE37

monochromatic

#1C2A5F #293E8F #3753BE #6178D1 #90A1DF

Accessibility & contrast

On white

6.68

#3753BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3753BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753BE

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753BE	#FFFFFF	#000000	##FFFFFF
##3753BE	1.00	6.68	3.14	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C2

Deuteranopia (green-blind)

#0056BC

Tritanopia (blue-blind)

#006D80

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3753be;
/* rgb */ color: rgb(55, 83, 190);
/* oklch */ color: oklch(48.5% 0.171 268.2);

Tailwind

colors: {
  custom: {
    50: '#7f83d2',
    500: '#3753be',
    950: '#000000',
  },
}

SCSS

$custom: #3753be;
$custom-light: #7f83d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3753be",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 190
  },
  "hsl": {
    "h": 227.556,
    "s": 55.102,
    "l": 48.039
  },
  "oklch": {
    "l": 0.48486,
    "c": 0.17106,
    "h": 268.2
  },
  "luminance": 0.10716
}

Semantic roles & 50–950 ramp

primary

#3753BE

secondary

#CABC87

accent

#C049DE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3753BE

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

Preview Lab → · Contrast checker → · Palette generator →