#3748B6#3748B6

#3748B6 is a mid, vivid blue. Relative luminance 0.088; OKLCH L 45.7% C 0.174 H 271.1°. Best body text is #FFFFFF at 7.60:1 contrast (WCAG AA passes).

Color values

HEX	#3748B6
RGB	rgb(55, 72, 182)
HSL	hsl(232, 54%, 46%)
HSV	hsv(232, 70%, 71%)
CMYK	cmyk(69.8%, 60.4%, 0%, 28.6%)
CIE-LAB	lab(35.64, 30.54, -60.27)
CIE-LCH	lch(35.64, 67.57, 296.87°)
OKLab	oklab(45.72% 0.0032 -0.1738)
OKLCH	oklch(45.72% 0.174 271.1)
XYZ	xyz(12.3335, 8.8232, 45.3000)
Luminance	0.0882 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3748B6 #B6A537

analogous

#3787B6 #3748B6 #6637B6

triadic

#3748B6 #B63748 #48B637

tetradic

#3748B6 #B63787 #B6A537 #37B666

square

#3748B6 #B63787 #B6A537 #37B666

split-complementary

#3748B6 #B66637 #87B637

monochromatic

#1B2358 #293587 #3748B6 #5C6CCE #8B96DC

Accessibility & contrast

On white

7.60

#3748B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.76

#3748B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3748B6

7.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748B6	#FFFFFF	#000000	##FFFFFF
##3748B6	1.00	7.60	2.76	7.60
#FFFFFF	7.60	1.00	21.00	1.00
#000000	2.76	21.00	1.00	21.00
##FFFFFF	7.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABA

Deuteranopia (green-blind)

#004EB4

Tritanopia (blue-blind)

#006478

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #3748b6;
/* rgb */ color: rgb(55, 72, 182);
/* oklch */ color: oklch(45.7% 0.174 271.1);

Tailwind

colors: {
  custom: {
    50: '#7e7acd',
    500: '#3748b6',
    950: '#000000',
  },
}

SCSS

$custom: #3748b6;
$custom-light: #7e7acd;
$custom-dark: #000000;

JSON

{
  "hex": "#3748b6",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 182
  },
  "hsl": {
    "h": 231.969,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.45715,
    "c": 0.17386,
    "h": 271.1
  },
  "luminance": 0.08824
}

Semantic roles & 50–950 ramp

primary

#3748B6

secondary

#C6BD82

accent

#C94BDD

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0914

muted

#7C7B82

Preview Lab

Preview with #3748B6

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

Preview Lab → · Contrast checker → · Palette generator →