#3F47CC#3F47CC

#3F47CC is a mid, highly saturated blue. Relative luminance 0.099; OKLCH L 47.9% C 0.202 H 273.3°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F47CC
RGB	rgb(63, 71, 204)
HSL	hsl(237, 58%, 52%)
HSV	hsv(237, 69%, 80%)
CMYK	cmyk(69.1%, 65.2%, 0%, 20%)
CIE-LAB	lab(37.70, 39.92, -69.75)
CIE-LCH	lch(37.70, 80.37, 299.78°)
OKLab	oklab(47.92% 0.0115 -0.2014)
OKLCH	oklch(47.92% 0.202 273.3)
XYZ	xyz(15.1986, 9.9214, 58.2291)
Luminance	0.0992 (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

#3F47CC #CCC43F

analogous

#3F8DCC #3F47CC #7E3FCC

triadic

#3F47CC #CC3F47 #47CC3F

tetradic

#3F47CC #CC3F8D #CCC43F #3FCC7E

square

#3F47CC #CC3F8D #CCC43F #3FCC7E

split-complementary

#3F47CC #CC7E3F #8DCC3F

monochromatic

#1E2372 #2B32A3 #3F47CC #6F75D9 #A0A4E6

Accessibility & contrast

On white

7.04

#3F47CC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F47CC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47CC

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47CC	#FFFFFF	#000000	##FFFFFF
##3F47CC	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD0

Deuteranopia (green-blind)

#0052C9

Tritanopia (blue-blind)

#006A83

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f47cc;
/* rgb */ color: rgb(63, 71, 204);
/* oklch */ color: oklch(47.9% 0.202 273.3);

Tailwind

colors: {
  custom: {
    50: '#867add',
    500: '#3f47cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f47cc;
$custom-light: #867add;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47cc",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 204
  },
  "hsl": {
    "h": 236.596,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.47921,
    "c": 0.20178,
    "h": 273.3
  },
  "luminance": 0.09923
}

Semantic roles & 50–950 ramp

primary

#3F47CC

secondary

#D2CF95

accent

#D847E1

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F47CC

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

Preview Lab → · Contrast checker → · Palette generator →