#3749C1#3749C1

#3749C1 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.8% C 0.187 H 270.7°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#3749C1
RGB	rgb(55, 73, 193)
HSL	hsl(232, 56%, 49%)
HSV	hsv(232, 72%, 76%)
CMYK	cmyk(71.5%, 62.2%, 0%, 24.3%)
CIE-LAB	lab(36.79, 33.84, -64.85)
CIE-LCH	lch(36.79, 73.15, 297.56°)
OKLab	oklab(46.85% 0.0022 -0.1873)
OKLCH	oklch(46.85% 0.187 270.7)
XYZ	xyz(13.5805, 9.4262, 51.5455)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3749C1 #C1AF37

analogous

#378EC1 #3749C1 #6A37C1

triadic

#3749C1 #C13749 #49C137

tetradic

#3749C1 #C1378E #C1AF37 #37C16A

square

#3749C1 #C1378E #C1AF37 #37C16A

split-complementary

#3749C1 #C16A37 #8EC137

monochromatic

#1C2562 #293791 #3749C1 #6371D2 #929CE0

Accessibility & contrast

On white

7.28

#3749C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3749C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749C1

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749C1	#FFFFFF	#000000	##FFFFFF
##3749C1	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC5

Deuteranopia (green-blind)

#0050BF

Tritanopia (blue-blind)

#00687E

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3749c1;
/* rgb */ color: rgb(55, 73, 193);
/* oklch */ color: oklch(46.8% 0.187 270.7);

Tailwind

colors: {
  custom: {
    50: '#807bd5',
    500: '#3749c1',
    950: '#000000',
  },
}

SCSS

$custom: #3749c1;
$custom-light: #807bd5;
$custom-dark: #000000;

JSON

{
  "hex": "#3749c1",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 193
  },
  "hsl": {
    "h": 232.174,
    "s": 55.645,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46846,
    "c": 0.18728,
    "h": 270.7
  },
  "luminance": 0.09428
}

Semantic roles & 50–950 ramp

primary

#3749C1

secondary

#CBC289

accent

#CB49DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749C1

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

Preview Lab → · Contrast checker → · Palette generator →