#3F47C8#3F47C8

#3F47C8 is a mid, vivid blue. Relative luminance 0.097; OKLCH L 47.6% C 0.197 H 273.4°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F47C8
RGB	rgb(63, 71, 200)
HSL	hsl(236, 55%, 52%)
HSV	hsv(236, 69%, 78%)
CMYK	cmyk(68.5%, 64.5%, 0%, 21.6%)
CIE-LAB	lab(37.36, 38.55, -67.99)
CIE-LCH	lch(37.36, 78.16, 299.55°)
OKLab	oklab(47.56% 0.0118 -0.1963)
OKLCH	oklch(47.56% 0.197 273.4)
XYZ	xyz(14.7250, 9.7320, 55.7348)
Luminance	0.0973 (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

#3F47C8 #C8C03F

analogous

#3F8CC8 #3F47C8 #7C3FC8

triadic

#3F47C8 #C83F47 #47C83F

tetradic

#3F47C8 #C83F8C #C8C03F #3FC87C

square

#3F47C8 #C83F8C #C8C03F #3FC87C

split-complementary

#3F47C8 #C87C3F #8CC83F

monochromatic

#1F246D #2D339D #3F47C8 #6F75D6 #9EA2E3

Accessibility & contrast

On white

7.13

#3F47C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#3F47C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F47C8

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F47C8	#FFFFFF	#000000	##FFFFFF
##3F47C8	1.00	7.13	2.95	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECC

Deuteranopia (green-blind)

#0052C6

Tritanopia (blue-blind)

#006981

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f47c8;
/* rgb */ color: rgb(63, 71, 200);
/* oklch */ color: oklch(47.6% 0.197 273.4);

Tailwind

colors: {
  custom: {
    50: '#857ada',
    500: '#3f47c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f47c8;
$custom-light: #857ada;
$custom-dark: #000000;

JSON

{
  "hex": "#3f47c8",
  "rgb": {
    "r": 63,
    "g": 71,
    "b": 200
  },
  "hsl": {
    "h": 236.496,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.47564,
    "c": 0.19665,
    "h": 273.4
  },
  "luminance": 0.09733
}

Semantic roles & 50–950 ramp

primary

#3F47C8

secondary

#D0CC93

accent

#D649DF

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0915

muted

#7D7B83

Preview Lab

Preview with #3F47C8

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

Preview Lab → · Contrast checker → · Palette generator →