#3753C0#3753C0

#3753C0 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.6% C 0.174 H 268.3°. Best body text is #FFFFFF at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#3753C0
RGB	rgb(55, 83, 192)
HSL	hsl(228, 55%, 48%)
HSV	hsv(228, 71%, 75%)
CMYK	cmyk(71.4%, 56.8%, 0%, 24.7%)
CIE-LAB	lab(39.25, 27.05, -60.27)
CIE-LCH	lch(39.25, 66.06, 294.17°)
OKLab	oklab(48.65% -0.0052 -0.1737)
OKLCH	oklch(48.65% 0.174 268.3)
XYZ	xyz(14.1799, 10.8031, 51.1968)
Luminance	0.1080 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3753C0 #C0A437

analogous

#3797C0 #3753C0 #5F37C0

triadic

#3753C0 #C03753 #53C037

tetradic

#3753C0 #C03797 #C0A437 #37C05F

square

#3753C0 #C03797 #C0A437 #37C05F

split-complementary

#3753C0 #C05F37 #97C037

monochromatic

#1C2A61 #293E90 #3753C0 #6279D2 #92A2E0

Accessibility & contrast

On white

6.64

#3753C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#3753C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3753C0

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3753C0	#FFFFFF	#000000	##FFFFFF
##3753C0	1.00	6.64	3.16	6.64
#FFFFFF	6.64	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C4

Deuteranopia (green-blind)

#0056BE

Tritanopia (blue-blind)

#006E81

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3753c0;
/* rgb */ color: rgb(55, 83, 192);
/* oklch */ color: oklch(48.6% 0.174 268.3);

Tailwind

colors: {
  custom: {
    50: '#8083d4',
    500: '#3753c0',
    950: '#000000',
  },
}

SCSS

$custom: #3753c0;
$custom-light: #8083d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3753c0",
  "rgb": {
    "r": 55,
    "g": 83,
    "b": 192
  },
  "hsl": {
    "h": 227.737,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.48647,
    "c": 0.17377,
    "h": 268.3
  },
  "luminance": 0.10805
}

Semantic roles & 50–950 ramp

primary

#3753C0

secondary

#CBBD88

accent

#C049DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3753C0

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

Preview Lab → · Contrast checker → · Palette generator →