#3744B5#3744B5

#3744B5 is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.9% C 0.177 H 272.0°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#3744B5
RGB	rgb(55, 68, 181)
HSL	hsl(234, 53%, 46%)
HSV	hsv(234, 70%, 71%)
CMYK	cmyk(69.6%, 62.4%, 0%, 29%)
CIE-LAB	lab(34.56, 32.75, -61.44)
CIE-LCH	lch(34.56, 69.62, 298.06°)
OKLab	oklab(44.89% 0.0063 -0.1773)
OKLCH	oklch(44.89% 0.177 272)
XYZ	xyz(11.9803, 8.2815, 44.6742)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3744B5 #B5A837

analogous

#3783B5 #3744B5 #6937B5

triadic

#3744B5 #B53744 #44B537

tetradic

#3744B5 #B53783 #B5A837 #37B569

square

#3744B5 #B53783 #B5A837 #37B569

split-complementary

#3744B5 #B56937 #83B537

monochromatic

#1A2157 #293286 #3744B5 #5C68CD #8B93DC

Accessibility & contrast

On white

7.90

#3744B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3744B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744B5

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744B5	#FFFFFF	#000000	##FFFFFF
##3744B5	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B9

Deuteranopia (green-blind)

#004CB3

Tritanopia (blue-blind)

#006176

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3744b5;
/* rgb */ color: rgb(55, 68, 181);
/* oklch */ color: oklch(44.9% 0.177 272.0);

Tailwind

colors: {
  custom: {
    50: '#7e78cc',
    500: '#3744b5',
    950: '#000000',
  },
}

SCSS

$custom: #3744b5;
$custom-light: #7e78cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3744b5",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 181
  },
  "hsl": {
    "h": 233.81,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44892,
    "c": 0.17741,
    "h": 272
  },
  "luminance": 0.08283
}

Semantic roles & 50–950 ramp

primary

#3744B5

secondary

#C6BF82

accent

#CE4BDD

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3744B5

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

Preview Lab → · Contrast checker → · Palette generator →