#3753C1#3753C1

#3753C1 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.7% C 0.175 H 268.3°. Best body text is #FFFFFF at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#3753C1
RGB	rgb(55, 83, 193)
HSL	hsl(228, 56%, 49%)
HSV	hsv(228, 72%, 76%)
CMYK	cmyk(71.5%, 57%, 0%, 24.3%)
CIE-LAB	lab(39.32, 27.42, -60.73)
CIE-LCH	lch(39.32, 66.63, 294.30°)
OKLab	oklab(48.73% -0.0052 -0.175)
OKLCH	oklch(48.73% 0.175 268.3)
XYZ	xyz(14.2911, 10.8475, 51.7824)
Luminance	0.1085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753C1 #C1A537

analogous

#3798C1 #3753C1 #6037C1

triadic

#3753C1 #C13753 #53C137

tetradic

#3753C1 #C13798 #C1A537 #37C160

square

#3753C1 #C13798 #C1A537 #37C160

split-complementary

#3753C1 #C16037 #98C137

monochromatic

#1C2A62 #293F91 #3753C1 #6379D2 #92A2E0

Accessibility & contrast

On white

6.63

#3753C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3753C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753C1

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753C1	#FFFFFF	#000000	##FFFFFF
##3753C1	1.00	6.63	3.17	6.63
#FFFFFF	6.63	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C5

Deuteranopia (green-blind)

#0056BF

Tritanopia (blue-blind)

#006E82

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3753c1;
/* rgb */ color: rgb(55, 83, 193);
/* oklch */ color: oklch(48.7% 0.175 268.3);

Tailwind

colors: {
  custom: {
    50: '#8083d5',
    500: '#3753c1',
    950: '#000000',
  },
}

SCSS

$custom: #3753c1;
$custom-light: #8083d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3753c1",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 193
  },
  "hsl": {
    "h": 227.826,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.48727,
    "c": 0.17513,
    "h": 268.3
  },
  "luminance": 0.10849
}

Semantic roles & 50–950 ramp

primary

#3753C1

secondary

#CBBE89

accent

#C049DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3753C1

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

Preview Lab → · Contrast checker → · Palette generator →