#3F47DA#3F47DA

#3F47DA is a mid, highly saturated blue. Relative luminance 0.106; OKLCH L 49.2% C 0.219 H 272.7°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3F47DA
RGB	rgb(63, 71, 218)
HSL	hsl(237, 68%, 55%)
HSV	hsv(237, 71%, 85%)
CMYK	cmyk(71.1%, 67.4%, 0%, 14.5%)
CIE-LAB	lab(38.94, 44.65, -75.79)
CIE-LCH	lch(38.94, 87.96, 300.50°)
OKLab	oklab(49.2% 0.0102 -0.2191)
OKLCH	oklch(49.2% 0.219 272.7)
XYZ	xyz(16.9538, 10.6235, 67.4731)
Luminance	0.1062 (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

#3F47DA #DAD23F

analogous

#3F95DA #3F47DA #843FDA

triadic

#3F47DA #DA3F47 #47DA3F

tetradic

#3F47DA #DA3F95 #DAD23F #3FDA84

square

#3F47DA #DA3F95 #DAD23F #3FDA84

split-complementary

#3F47DA #DA843F #95DA3F

monochromatic

#1A1F85 #242BB8 #3F47DA #7278E4 #A6A9EE

Accessibility & contrast

On white

6.72

#3F47DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F47DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47DA

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47DA	#FFFFFF	#000000	##FFFFFF
##3F47DA	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063DF

Deuteranopia (green-blind)

#0054D7

Tritanopia (blue-blind)

#006F8B

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f47da;
/* rgb */ color: rgb(63, 71, 218);
/* oklch */ color: oklch(49.2% 0.219 272.7);

Tailwind

colors: {
  custom: {
    50: '#897be7',
    500: '#3f47da',
    950: '#000000',
  },
}

SCSS

$custom: #3f47da;
$custom-light: #897be7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47da",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 218
  },
  "hsl": {
    "h": 236.903,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.49199,
    "c": 0.21935,
    "h": 272.7
  },
  "luminance": 0.10625
}

Semantic roles & 50–950 ramp

primary

#3F47DA

secondary

#DBD89A

accent

#E23DEB

background

#F9F7FE

surface

#F2EEFD

border

#CCC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F47DA

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

Preview Lab → · Contrast checker → · Palette generator →