#4047BB#4047BB

#4047BB is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.5% C 0.179 H 274.4°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#4047BB
RGB	rgb(64, 71, 187)
HSL	hsl(237, 49%, 49%)
HSV	hsv(237, 66%, 73%)
CMYK	cmyk(65.8%, 62%, 0%, 26.7%)
CIE-LAB	lab(36.33, 34.22, -62.06)
CIE-LCH	lch(36.33, 70.87, 298.88°)
OKLab	oklab(46.5% 0.0137 -0.1789)
OKLCH	oklch(46.5% 0.179 274.4)
XYZ	xyz(13.3343, 9.1832, 48.0739)
Luminance	0.0918 (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

#4047BB #BBB440

analogous

#4085BB #4047BB #7740BB

triadic

#4047BB #BB4047 #47BB40

tetradic

#4047BB #BB4085 #BBB440 #40BB77

square

#4047BB #BB4085 #BBB440 #40BB77

split-complementary

#4047BB #BB7740 #85BB40

monochromatic

#212460 #30368D #4047BB #6C71CD #999DDC

Accessibility & contrast

On white

7.40

#4047BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#4047BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4047BB

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4047BB	#FFFFFF	#000000	##FFFFFF
##4047BB	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BBF

Deuteranopia (green-blind)

#0050B9

Tritanopia (blue-blind)

#00647A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #4047bb;
/* rgb */ color: rgb(64, 71, 187);
/* oklch */ color: oklch(46.5% 0.179 274.4);

Tailwind

colors: {
  custom: {
    50: '#837ad0',
    500: '#4047bb',
    950: '#000000',
  },
}

SCSS

$custom: #4047bb;
$custom-light: #837ad0;
$custom-dark: #000000;

JSON

{
  "hex": "#4047bb",
  "rgb": {
    "r": 64,
    "g": 71,
    "b": 187
  },
  "hsl": {
    "h": 236.585,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.46495,
    "c": 0.1794,
    "h": 274.4
  },
  "luminance": 0.09184
}

Semantic roles & 50–950 ramp

primary

#4047BB

secondary

#C8C58F

accent

#D14FD9

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #4047BB

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

Preview Lab → · Contrast checker → · Palette generator →