#3753AA#3753AA

#3753AA is a mid, vivid blue. Relative luminance 0.099; OKLCH L 46.9% C 0.143 H 267.3°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#3753AA
RGB	rgb(55, 83, 170)
HSL	hsl(225, 51%, 44%)
HSV	hsv(225, 68%, 67%)
CMYK	cmyk(67.6%, 51.2%, 0%, 33.3%)
CIE-LAB	lab(37.66, 18.99, -49.88)
CIE-LCH	lch(37.66, 53.38, 290.84°)
OKLab	oklab(46.95% -0.0068 -0.1431)
OKLCH	oklch(46.95% 0.143 267.3)
XYZ	xyz(11.9220, 9.8999, 39.3050)
Luminance	0.0990 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753AA #AA8E37

analogous

#378DAA #3753AA #5537AA

triadic

#3753AA #AA3753 #53AA37

tetradic

#3753AA #AA378D #AA8E37 #37AA55

square

#3753AA #AA378D #AA8E37 #37AA55

split-complementary

#3753AA #AA5537 #8DAA37

monochromatic

#19264E #283C7C #3753AA #5672C8 #8498D7

Accessibility & contrast

On white

7.05

#3753AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3753AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3753AA

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753AA	#FFFFFF	#000000	##FFFFFF
##3753AA	1.00	7.05	2.98	7.05
#FFFFFF	7.05	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#205EAD

Deuteranopia (green-blind)

#0054A8

Tritanopia (blue-blind)

#006776

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3753aa;
/* rgb */ color: rgb(55, 83, 170);
/* oklch */ color: oklch(46.9% 0.143 267.3);

Tailwind

colors: {
  custom: {
    50: '#7b82c4',
    500: '#3753aa',
    950: '#000000',
  },
}

SCSS

$custom: #3753aa;
$custom-light: #7b82c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3753aa",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 170
  },
  "hsl": {
    "h": 225.391,
    "s": 51.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46949,
    "c": 0.1433,
    "h": 267.3
  },
  "luminance": 0.09901
}

Semantic roles & 50–950 ramp

primary

#3753AA

secondary

#C1B07C

accent

#B84DDB

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3753AA

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

Preview Lab → · Contrast checker → · Palette generator →