#3F47CE#3F47CE

#3F47CE is a mid, highly saturated blue. Relative luminance 0.100; OKLCH L 48.1% C 0.204 H 273.2°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#3F47CE
RGB	rgb(63, 71, 206)
HSL	hsl(237, 59%, 53%)
HSV	hsv(237, 69%, 81%)
CMYK	cmyk(69.4%, 65.5%, 0%, 19.2%)
CIE-LAB	lab(37.87, 40.60, -70.62)
CIE-LCH	lch(37.87, 81.46, 299.89°)
OKLab	oklab(48.1% 0.0113 -0.204)
OKLCH	oklch(48.1% 0.204 273.2)
XYZ	xyz(15.4400, 10.0180, 59.5005)
Luminance	0.1002 (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

#3F47CE #CEC63F

analogous

#3F8FCE #3F47CE #7E3FCE

triadic

#3F47CE #CE3F47 #47CE3F

tetradic

#3F47CE #CE3F8F #CEC63F #3FCE7E

square

#3F47CE #CE3F8F #CEC63F #3FCE7E

split-complementary

#3F47CE #CE7E3F #8FCE3F

monochromatic

#1E2375 #2A31A6 #3F47CE #7076DA #A1A4E7

Accessibility & contrast

On white

6.99

#3F47CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.00

#3F47CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47CE

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47CE	#FFFFFF	#000000	##FFFFFF
##3F47CE	1.00	6.99	3.00	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D2

Deuteranopia (green-blind)

#0053CB

Tritanopia (blue-blind)

#006B84

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f47ce;
/* rgb */ color: rgb(63, 71, 206);
/* oklch */ color: oklch(48.1% 0.204 273.2);

Tailwind

colors: {
  custom: {
    50: '#877ade',
    500: '#3f47ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f47ce;
$custom-light: #877ade;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47ce",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 206
  },
  "hsl": {
    "h": 236.643,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.48101,
    "c": 0.20432,
    "h": 273.2
  },
  "luminance": 0.10019
}

Semantic roles & 50–950 ramp

primary

#3F47CE

secondary

#D3D095

accent

#DA45E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F47CE

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

Preview Lab → · Contrast checker → · Palette generator →