#3F47CF#3F47CF

#3F47CF is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.2% C 0.206 H 273.1°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#3F47CF
RGB	rgb(63, 71, 207)
HSL	hsl(237, 60%, 53%)
HSV	hsv(237, 70%, 81%)
CMYK	cmyk(69.6%, 65.7%, 0%, 18.8%)
CIE-LAB	lab(37.96, 40.94, -71.06)
CIE-LCH	lch(37.96, 82.01, 299.95°)
OKLab	oklab(48.19% 0.0112 -0.2053)
OKLCH	oklch(48.19% 0.206 273.1)
XYZ	xyz(15.5619, 10.0667, 60.1423)
Luminance	0.1007 (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

#3F47CF #CFC73F

analogous

#3F8FCF #3F47CF #7F3FCF

triadic

#3F47CF #CF3F47 #47CF3F

tetradic

#3F47CF #CF3F8F #CFC73F #3FCF7F

square

#3F47CF #CF3F8F #CFC73F #3FCF7F

split-complementary

#3F47CF #CF7F3F #8FCF3F

monochromatic

#1E2276 #2A31A7 #3F47CF #7076DB #A1A5E7

Accessibility & contrast

On white

6.97

#3F47CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F47CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F47CF

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47CF	#FFFFFF	#000000	##FFFFFF
##3F47CF	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D3

Deuteranopia (green-blind)

#0053CC

Tritanopia (blue-blind)

#006B85

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f47cf;
/* rgb */ color: rgb(63, 71, 207);
/* oklch */ color: oklch(48.2% 0.206 273.1);

Tailwind

colors: {
  custom: {
    50: '#877adf',
    500: '#3f47cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f47cf;
$custom-light: #877adf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47cf",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 207
  },
  "hsl": {
    "h": 236.667,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.48191,
    "c": 0.2056,
    "h": 273.1
  },
  "luminance": 0.10068
}

Semantic roles & 50–950 ramp

primary

#3F47CF

secondary

#D4D196

accent

#DA45E3

background

#F9F7FD

surface

#F1EDFB

border

#CBC8D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F47CF

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

Preview Lab → · Contrast checker → · Palette generator →