#3749C3#3749C3

#3749C3 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.190 H 270.7°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#3749C3
RGB	rgb(55, 73, 195)
HSL	hsl(232, 56%, 49%)
HSV	hsv(232, 72%, 76%)
CMYK	cmyk(71.8%, 62.6%, 0%, 23.5%)
CIE-LAB	lab(36.96, 34.55, -65.75)
CIE-LCH	lch(36.96, 74.28, 297.72°)
OKLab	oklab(47.02% 0.0022 -0.1899)
OKLCH	oklch(47.02% 0.19 270.7)
XYZ	xyz(13.8051, 9.5160, 52.7284)
Luminance	0.0952 (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

#3749C3 #C3B137

analogous

#378FC3 #3749C3 #6B37C3

triadic

#3749C3 #C33749 #49C337

tetradic

#3749C3 #C3378F #C3B137 #37C36B

square

#3749C3 #C3378F #C3B137 #37C36B

split-complementary

#3749C3 #C36B37 #8FC337

monochromatic

#1C2564 #2A3793 #3749C3 #6472D3 #949EE1

Accessibility & contrast

On white

7.23

#3749C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3749C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3749C3

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3749C3	#FFFFFF	#000000	##FFFFFF
##3749C3	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC7

Deuteranopia (green-blind)

#0051C1

Tritanopia (blue-blind)

#00687F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3749c3;
/* rgb */ color: rgb(55, 73, 195);
/* oklch */ color: oklch(47.0% 0.190 270.7);

Tailwind

colors: {
  custom: {
    50: '#817bd6',
    500: '#3749c3',
    950: '#000000',
  },
}

SCSS

$custom: #3749c3;
$custom-light: #817bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3749c3",
  "rgb": {
    "r": 55,
    "g": 73,
    "b": 195
  },
  "hsl": {
    "h": 232.286,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.47021,
    "c": 0.18991,
    "h": 270.7
  },
  "luminance": 0.09517
}

Semantic roles & 50–950 ramp

primary

#3749C3

secondary

#CCC38A

accent

#CC49DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3749C3

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

Preview Lab → · Contrast checker → · Palette generator →