#4247BB#4247BB

#4247BB is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.6% C 0.179 H 275.1°. Best body text is #FFFFFF at 7.37:1 contrast (WCAG AA passes).

Color values

HEX	#4247BB
RGB	rgb(66, 71, 187)
HSL	hsl(238, 48%, 50%)
HSV	hsv(238, 65%, 73%)
CMYK	cmyk(64.7%, 62%, 0%, 26.7%)
CIE-LAB	lab(36.46, 34.52, -61.84)
CIE-LCH	lch(36.46, 70.83, 299.17°)
OKLab	oklab(46.62% 0.016 -0.1782)
OKLCH	oklch(46.62% 0.179 275.1)
XYZ	xyz(13.4667, 9.2514, 48.0801)
Luminance	0.0925 (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

#4247BB #BBB642

analogous

#4283BB #4247BB #7A42BB

triadic

#4247BB #BB4247 #47BB42

tetradic

#4247BB #BB4283 #BBB642 #42BB7A

square

#4247BB #BB4283 #BBB642 #42BB7A

split-complementary

#4247BB #BB7A42 #83BB42

monochromatic

#222561 #32368E #4247BB #6E72CC #9C9EDC

Accessibility & contrast

On white

7.37

#4247BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#4247BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4247BB

7.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4247BB	#FFFFFF	#000000	##FFFFFF
##4247BB	1.00	7.37	2.85	7.37
#FFFFFF	7.37	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#0050B9

Tritanopia (blue-blind)

#00647A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4247bb;
/* rgb */ color: rgb(66, 71, 187);
/* oklch */ color: oklch(46.6% 0.179 275.1);

Tailwind

colors: {
  custom: {
    50: '#847ad0',
    500: '#4247bb',
    950: '#000000',
  },
}

SCSS

$custom: #4247bb;
$custom-light: #847ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4247bb",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 187
  },
  "hsl": {
    "h": 237.521,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.46624,
    "c": 0.17891,
    "h": 275.1
  },
  "luminance": 0.09253
}

Semantic roles & 50–950 ramp

primary

#4247BB

secondary

#C8C691

accent

#D250D7

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #4247BB

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

Preview Lab → · Contrast checker → · Palette generator →