#3753A4#3753A4

#3753A4 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.5% C 0.135 H 266.8°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#3753A4
RGB	rgb(55, 83, 164)
HSL	hsl(225, 50%, 43%)
HSV	hsv(225, 66%, 64%)
CMYK	cmyk(66.5%, 49.4%, 0%, 35.7%)
CIE-LAB	lab(37.26, 16.78, -46.96)
CIE-LCH	lch(37.26, 49.87, 289.67°)
OKLab	oklab(46.51% -0.0075 -0.1345)
OKLCH	oklch(46.51% 0.135 266.8)
XYZ	xyz(11.3673, 9.6780, 36.3837)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753A4 #A48837

analogous

#3789A4 #3753A4 #5137A4

triadic

#3753A4 #A43753 #53A437

tetradic

#3753A4 #A43789 #A48837 #37A451

square

#3753A4 #A43789 #A48837 #37A451

split-complementary

#3753A4 #A45137 #89A437

monochromatic

#182548 #283C76 #3753A4 #5370C5 #8196D5

Accessibility & contrast

On white

7.15

#3753A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#3753A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3753A4

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753A4	#FFFFFF	#000000	##FFFFFF
##3753A4	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#285DA7

Deuteranopia (green-blind)

#0D53A2

Tritanopia (blue-blind)

#006673

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3753a4;
/* rgb */ color: rgb(55, 83, 164);
/* oklch */ color: oklch(46.5% 0.135 266.8);

Tailwind

colors: {
  custom: {
    50: '#7a82bf',
    500: '#3753a4',
    950: '#000000',
  },
}

SCSS

$custom: #3753a4;
$custom-light: #7a82bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3753a4",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 164
  },
  "hsl": {
    "h": 224.587,
    "s": 49.772,
    "l": 42.941
  },
  "oklch": {
    "l": 0.46513,
    "c": 0.13475,
    "h": 266.8
  },
  "luminance": 0.09679
}

Semantic roles & 50–950 ramp

primary

#3753A4

secondary

#BEAC79

accent

#B64FD9

background

#F7F7FB

surface

#EEEEF7

border

#C9C9D0

text

#0A0A12

muted

#7C7C81

Preview Lab

Preview with #3753A4

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

Preview Lab → · Contrast checker → · Palette generator →