#4047BC#4047BC

#4047BC is a mid, vivid blue. Relative luminance 0.092; OKLCH L 46.6% C 0.181 H 274.3°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#4047BC
RGB	rgb(64, 71, 188)
HSL	hsl(237, 49%, 49%)
HSV	hsv(237, 66%, 74%)
CMYK	cmyk(66%, 62.2%, 0%, 26.3%)
CIE-LAB	lab(36.42, 34.57, -62.52)
CIE-LCH	lch(36.42, 71.44, 298.94°)
OKLab	oklab(46.58% 0.0136 -0.1802)
OKLCH	oklch(46.58% 0.181 274.3)
XYZ	xyz(13.4417, 9.2261, 48.6397)
Luminance	0.0923 (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

#4047BC #BCB540

analogous

#4085BC #4047BC #7740BC

triadic

#4047BC #BC4047 #47BC40

tetradic

#4047BC #BC4085 #BCB540 #40BC77

square

#4047BC #BC4085 #BCB540 #40BC77

split-complementary

#4047BC #BC7740 #85BC40

monochromatic

#212561 #30368E #4047BC #6C72CD #9A9EDD

Accessibility & contrast

On white

7.38

#4047BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#4047BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4047BC

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4047BC	#FFFFFF	#000000	##FFFFFF
##4047BC	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC0

Deuteranopia (green-blind)

#0050BA

Tritanopia (blue-blind)

#00657B

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #4047bc;
/* rgb */ color: rgb(64, 71, 188);
/* oklch */ color: oklch(46.6% 0.181 274.3);

Tailwind

colors: {
  custom: {
    50: '#837ad1',
    500: '#4047bc',
    950: '#000000',
  },
}

SCSS

$custom: #4047bc;
$custom-light: #837ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#4047bc",
  "rgb": {
    "r": 64,
    "g": 71,
    "b": 188
  },
  "hsl": {
    "h": 236.613,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.4658,
    "c": 0.18073,
    "h": 274.3
  },
  "luminance": 0.09227
}

Semantic roles & 50–950 ramp

primary

#4047BC

secondary

#C9C58F

accent

#D14FD9

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #4047BC

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

Preview Lab → · Contrast checker → · Palette generator →