#3748C3#3748C3

#3748C3 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.8% C 0.191 H 270.9°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#3748C3
RGB	rgb(55, 72, 195)
HSL	hsl(233, 56%, 49%)
HSV	hsv(233, 72%, 76%)
CMYK	cmyk(71.8%, 63.1%, 0%, 23.5%)
CIE-LAB	lab(36.72, 35.19, -66.15)
CIE-LCH	lch(36.72, 74.92, 298.01°)
OKLab	oklab(46.84% 0.0029 -0.1911)
OKLCH	oklch(46.84% 0.191 270.9)
XYZ	xyz(13.7399, 9.3857, 52.7067)
Luminance	0.0939 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3748C3 #C3B237

analogous

#378EC3 #3748C3 #6C37C3

triadic

#3748C3 #C33748 #48C337

tetradic

#3748C3 #C3378E #C3B237 #37C36C

square

#3748C3 #C3378E #C3B237 #37C36C

split-complementary

#3748C3 #C36C37 #8EC337

monochromatic

#1C2564 #2A3693 #3748C3 #6471D3 #949DE1

Accessibility & contrast

On white

7.30

#3748C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#3748C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748C3

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748C3	#FFFFFF	#000000	##FFFFFF
##3748C3	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC7

Deuteranopia (green-blind)

#0050C1

Tritanopia (blue-blind)

#00687F

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3748c3;
/* rgb */ color: rgb(55, 72, 195);
/* oklch */ color: oklch(46.8% 0.191 270.9);

Tailwind

colors: {
  custom: {
    50: '#817bd6',
    500: '#3748c3',
    950: '#000000',
  },
}

SCSS

$custom: #3748c3;
$custom-light: #817bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3748c3",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 195
  },
  "hsl": {
    "h": 232.714,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.46842,
    "c": 0.19109,
    "h": 270.9
  },
  "luminance": 0.09387
}

Semantic roles & 50–950 ramp

primary

#3748C3

secondary

#CCC48A

accent

#CD49DF

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3748C3

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

Preview Lab → · Contrast checker → · Palette generator →