#4737BB#4737BB

#4737BB is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.4% C 0.197 H 280.2°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#4737BB
RGB	rgb(71, 55, 187)
HSL	hsl(247, 55%, 47%)
HSV	hsv(247, 71%, 73%)
CMYK	cmyk(62%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(33.26, 44.83, -67.07)
CIE-LCH	lch(33.26, 80.67, 303.76°)
OKLab	oklab(44.4% 0.035 -0.1934)
OKLCH	oklch(44.4% 0.197 280.2)
XYZ	xyz(12.9315, 7.6589, 47.8009)
Luminance	0.0766 (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

#4737BB #ABBB37

analogous

#3769BB #4737BB #8937BB

triadic

#4737BB #BB4737 #37BB47

tetradic

#4737BB #BB3769 #ABBB37 #37BB89

square

#4737BB #BB3769 #ABBB37 #37BB89

split-complementary

#4737BB #BB8937 #69BB37

monochromatic

#231B5C #35298C #4737BB #6D5FD0 #988EDE

Accessibility & contrast

On white

8.29

#4737BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#4737BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4737BB

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4737BB	#FFFFFF	#000000	##FFFFFF
##4737BB	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #4737bb;
/* rgb */ color: rgb(71, 55, 187);
/* oklch */ color: oklch(44.4% 0.197 280.2);

Tailwind

colors: {
  custom: {
    50: '#8870d1',
    500: '#4737bb',
    950: '#000000',
  },
}

SCSS

$custom: #4737bb;
$custom-light: #8870d1;
$custom-dark: #000000;

JSON

{
  "hex": "#4737bb",
  "rgb": {
    "r": 71,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 247.273,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44396,
    "c": 0.19653,
    "h": 280.2
  },
  "luminance": 0.0766
}

Semantic roles & 50–950 ramp

primary

#4737BB

secondary

#C0C985

accent

#DE4ACC

background

#F9F6FD

surface

#F1ECFA

border

#CBC7D3

text

#0D0714

muted

#7E7A83

Preview Lab

Preview with #4737BB

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

Preview Lab → · Contrast checker → · Palette generator →