#3F47D7#3F47D7

#3F47D7 is a mid, highly saturated blue. Relative luminance 0.105; OKLCH L 48.9% C 0.216 H 272.8°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F47D7
RGB	rgb(63, 71, 215)
HSL	hsl(237, 66%, 55%)
HSV	hsv(237, 71%, 84%)
CMYK	cmyk(70.7%, 67%, 0%, 15.7%)
CIE-LAB	lab(38.67, 43.64, -74.51)
CIE-LCH	lch(38.67, 86.35, 300.36°)
OKLab	oklab(48.92% 0.0105 -0.2154)
OKLCH	oklch(48.92% 0.216 272.8)
XYZ	xyz(16.5648, 10.4679, 65.4243)
Luminance	0.1047 (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

#3F47D7 #D7CF3F

analogous

#3F93D7 #3F47D7 #833FD7

triadic

#3F47D7 #D73F47 #47D73F

tetradic

#3F47D7 #D73F93 #D7CF3F #3FD783

square

#3F47D7 #D73F93 #D7CF3F #3FD783

split-complementary

#3F47D7 #D7833F #93D73F

monochromatic

#1B2081 #252DB3 #3F47D7 #7278E2 #A4A8EC

Accessibility & contrast

On white

6.79

#3F47D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3F47D7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47D7

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47D7	#FFFFFF	#000000	##FFFFFF
##3F47D7	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DB

Deuteranopia (green-blind)

#0054D4

Tritanopia (blue-blind)

#006E89

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f47d7;
/* rgb */ color: rgb(63, 71, 215);
/* oklch */ color: oklch(48.9% 0.216 272.8);

Tailwind

colors: {
  custom: {
    50: '#897be5',
    500: '#3f47d7',
    950: '#000000',
  },
}

SCSS

$custom: #3f47d7;
$custom-light: #897be5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47d7",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 215
  },
  "hsl": {
    "h": 236.842,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.48922,
    "c": 0.21563,
    "h": 272.8
  },
  "luminance": 0.1047
}

Semantic roles & 50–950 ramp

primary

#3F47D7

secondary

#D9D699

accent

#E03FE8

background

#F9F7FE

surface

#F1EEFC

border

#CBC9D5

text

#0D0916

muted

#7E7B84

Preview Lab

Preview with #3F47D7

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

Preview Lab → · Contrast checker → · Palette generator →