#3747DA#3747DA

#3747DA is a mid, highly saturated blue. Relative luminance 0.104; OKLCH L 48.8% C 0.221 H 270.5°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#3747DA
RGB	rgb(55, 71, 218)
HSL	hsl(234, 69%, 54%)
HSV	hsv(234, 75%, 85%)
CMYK	cmyk(74.8%, 67.4%, 0%, 14.5%)
CIE-LAB	lab(38.51, 43.83, -76.50)
CIE-LCH	lch(38.51, 88.17, 299.81°)
OKLab	oklab(48.78% 0.0019 -0.2214)
OKLCH	oklch(48.78% 0.221 270.5)
XYZ	xyz(16.4794, 10.3789, 67.4509)
Luminance	0.1038 (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

#3747DA #DACA37

analogous

#3799DA #3747DA #7837DA

triadic

#3747DA #DA3747 #47DA37

tetradic

#3747DA #DA3799 #DACA37 #37DA78

square

#3747DA #DA3799 #DACA37 #37DA78

split-complementary

#3747DA #DA7837 #99DA37

monochromatic

#18227F #212FB3 #3747DA #6B77E4 #9EA6ED

Accessibility & contrast

On white

6.83

#3747DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#3747DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3747DA

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3747DA	#FFFFFF	#000000	##FFFFFF
##3747DA	1.00	6.83	3.08	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DF

Deuteranopia (green-blind)

#0053D7

Tritanopia (blue-blind)

#006F8B

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3747da;
/* rgb */ color: rgb(55, 71, 218);
/* oklch */ color: oklch(48.8% 0.221 270.5);

Tailwind

colors: {
  custom: {
    50: '#867ae7',
    500: '#3747da',
    950: '#000000',
  },
}

SCSS

$custom: #3747da;
$custom-light: #867ae7;
$custom-dark: #000000;

JSON

{
  "hex": "#3747da",
  "rgb": {
    "r": 55,
    "g": 71,
    "b": 218
  },
  "hsl": {
    "h": 234.11,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.48777,
    "c": 0.22139,
    "h": 270.5
  },
  "luminance": 0.10381
}

Semantic roles & 50–950 ramp

primary

#3747DA

secondary

#D9D293

accent

#DA3CEC

background

#F9F7FE

surface

#F1EEFD

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3747DA

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

Preview Lab → · Contrast checker → · Palette generator →