#3748DA#3748DA

#3748DA is a mid, highly saturated blue. Relative luminance 0.105; OKLCH L 48.9% C 0.220 H 270.3°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#3748DA
RGB	rgb(55, 72, 218)
HSL	hsl(234, 69%, 54%)
HSV	hsv(234, 75%, 85%)
CMYK	cmyk(74.8%, 67%, 0%, 14.5%)
CIE-LAB	lab(38.74, 43.23, -76.14)
CIE-LCH	lch(38.74, 87.55, 299.59°)
OKLab	oklab(48.94% 0.0013 -0.2203)
OKLCH	oklch(48.94% 0.22 270.3)
XYZ	xyz(16.5435, 10.5071, 67.4723)
Luminance	0.1051 (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

#3748DA #DAC937

analogous

#3799DA #3748DA #7737DA

triadic

#3748DA #DA3748 #48DA37

tetradic

#3748DA #DA3799 #DAC937 #37DA77

square

#3748DA #DA3799 #DAC937 #37DA77

split-complementary

#3748DA #DA7737 #99DA37

monochromatic

#18227F #2130B3 #3748DA #6B77E4 #9EA7ED

Accessibility & contrast

On white

6.77

#3748DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3748DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3748DA

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3748DA	#FFFFFF	#000000	##FFFFFF
##3748DA	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DF

Deuteranopia (green-blind)

#0053D7

Tritanopia (blue-blind)

#00708B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3748da;
/* rgb */ color: rgb(55, 72, 218);
/* oklch */ color: oklch(48.9% 0.220 270.3);

Tailwind

colors: {
  custom: {
    50: '#867be7',
    500: '#3748da',
    950: '#000000',
  },
}

SCSS

$custom: #3748da;
$custom-light: #867be7;
$custom-dark: #000000;

JSON

{
  "hex": "#3748da",
  "rgb": {
    "r": 55,
    "g": 72,
    "b": 218
  },
  "hsl": {
    "h": 233.742,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.48939,
    "c": 0.22031,
    "h": 270.3
  },
  "luminance": 0.10509
}

Semantic roles & 50–950 ramp

primary

#3748DA

secondary

#D9D293

accent

#D93CEC

background

#F9F7FE

surface

#F1EEFD

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3748DA

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

Preview Lab → · Contrast checker → · Palette generator →