#3744B7#3744B7

#3744B7 is a mid, vivid blue. Relative luminance 0.084; OKLCH L 45.1% C 0.180 H 272.0°. Best body text is #FFFFFF at 7.86:1 contrast (WCAG AA passes).

Color values

HEX	#3744B7
RGB	rgb(55, 68, 183)
HSL	hsl(234, 54%, 47%)
HSV	hsv(234, 70%, 72%)
CMYK	cmyk(69.9%, 62.8%, 0%, 28.2%)
CIE-LAB	lab(34.73, 33.46, -62.35)
CIE-LCH	lch(34.73, 70.76, 298.22°)
OKLab	oklab(45.07% 0.0062 -0.18)
OKLCH	oklch(45.07% 0.18 272)
XYZ	xyz(12.1870, 8.3642, 45.7628)
Luminance	0.0837 (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

#3744B7 #B7AA37

analogous

#3784B7 #3744B7 #6A37B7

triadic

#3744B7 #B73744 #44B737

tetradic

#3744B7 #B73784 #B7AA37 #37B76A

square

#3744B7 #B73784 #B7AA37 #37B76A

split-complementary

#3744B7 #B76A37 #84B737

monochromatic

#1B2159 #293388 #3744B7 #5D68CE #8C94DC

Accessibility & contrast

On white

7.86

#3744B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#3744B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3744B7

7.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3744B7	#FFFFFF	#000000	##FFFFFF
##3744B7	1.00	7.86	2.67	7.86
#FFFFFF	7.86	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BB

Deuteranopia (green-blind)

#004CB5

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #3744b7;
/* rgb */ color: rgb(55, 68, 183);
/* oklch */ color: oklch(45.1% 0.180 272.0);

Tailwind

colors: {
  custom: {
    50: '#7f78ce',
    500: '#3744b7',
    950: '#000000',
  },
}

SCSS

$custom: #3744b7;
$custom-light: #7f78ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3744b7",
  "rgb": {
    "r": 55,
    "g": 68,
    "b": 183
  },
  "hsl": {
    "h": 233.906,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.45068,
    "c": 0.18007,
    "h": 272
  },
  "luminance": 0.08365
}

Semantic roles & 50–950 ramp

primary

#3744B7

secondary

#C7C083

accent

#CE4BDD

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3744B7

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

Preview Lab → · Contrast checker → · Palette generator →