#3744B9#3744B9

#3744B9 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.2% C 0.183 H 271.9°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#3744B9
RGB	rgb(55, 68, 185)
HSL	hsl(234, 54%, 47%)
HSV	hsv(234, 70%, 73%)
CMYK	cmyk(70.3%, 63.2%, 0%, 27.5%)
CIE-LAB	lab(34.90, 34.17, -63.25)
CIE-LCH	lch(34.90, 71.89, 298.38°)
OKLab	oklab(45.24% 0.0061 -0.1826)
OKLCH	oklch(45.24% 0.183 271.9)
XYZ	xyz(12.3967, 8.4480, 46.8669)
Luminance	0.0845 (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

#3744B9 #B9AC37

analogous

#3785B9 #3744B9 #6B37B9

triadic

#3744B9 #B93744 #44B937

tetradic

#3744B9 #B93785 #B9AC37 #37B96B

square

#3744B9 #B93785 #B9AC37 #37B96B

split-complementary

#3744B9 #B96B37 #85B937

monochromatic

#1B215B #29338A #3744B9 #5E69CF #8D95DD

Accessibility & contrast

On white

7.81

#3744B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#3744B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744B9

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744B9	#FFFFFF	#000000	##FFFFFF
##3744B9	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BD

Deuteranopia (green-blind)

#004CB7

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3744b9;
/* rgb */ color: rgb(55, 68, 185);
/* oklch */ color: oklch(45.2% 0.183 271.9);

Tailwind

colors: {
  custom: {
    50: '#7f78cf',
    500: '#3744b9',
    950: '#000000',
  },
}

SCSS

$custom: #3744b9;
$custom-light: #7f78cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3744b9",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 185
  },
  "hsl": {
    "h": 234,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.45244,
    "c": 0.18272,
    "h": 271.9
  },
  "luminance": 0.08449
}

Semantic roles & 50–950 ramp

primary

#3744B9

secondary

#C8C184

accent

#CF4ADE

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3744B9

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

Preview Lab → · Contrast checker → · Palette generator →