#3F47BF#3F47BF

#3F47BF is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.8% C 0.185 H 273.8°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F47BF
RGB	rgb(63, 71, 191)
HSL	hsl(236, 50%, 50%)
HSV	hsv(236, 67%, 75%)
CMYK	cmyk(67%, 62.8%, 0%, 25.1%)
CIE-LAB	lab(36.60, 35.46, -63.98)
CIE-LCH	lch(36.60, 73.15, 299.00°)
OKLab	oklab(46.78% 0.0124 -0.1845)
OKLCH	oklch(46.78% 0.185 273.8)
XYZ	xyz(13.7040, 9.3236, 50.3576)
Luminance	0.0932 (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

#3F47BF #BFB73F

analogous

#3F87BF #3F47BF #773FBF

triadic

#3F47BF #BF3F47 #47BF3F

tetradic

#3F47BF #BF3F87 #BFB73F #3FBF77

square

#3F47BF #BF3F87 #BFB73F #3FBF77

split-complementary

#3F47BF #BF773F #87BF3F

monochromatic

#212563 #303691 #3F47BF #6D73CF #9B9FDE

Accessibility & contrast

On white

7.33

#3F47BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F47BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47BF

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47BF	#FFFFFF	#000000	##FFFFFF
##3F47BF	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC3

Deuteranopia (green-blind)

#0050BD

Tritanopia (blue-blind)

#00667C

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f47bf;
/* rgb */ color: rgb(63, 71, 191);
/* oklch */ color: oklch(46.8% 0.185 273.8);

Tailwind

colors: {
  custom: {
    50: '#847ad3',
    500: '#3f47bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f47bf;
$custom-light: #847ad3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47bf",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 191
  },
  "hsl": {
    "h": 236.25,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.46776,
    "c": 0.18494,
    "h": 273.8
  },
  "luminance": 0.09325
}

Semantic roles & 50–950 ramp

primary

#3F47BF

secondary

#CAC690

accent

#D14EDA

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F47BF

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

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