#3F48C3#3F48C3

#3F48C3 is a mid, vivid blue. Relative luminance 0.096; OKLCH L 47.3% C 0.189 H 273.4°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F48C3
RGB	rgb(63, 72, 195)
HSL	hsl(236, 52%, 51%)
HSV	hsv(236, 68%, 76%)
CMYK	cmyk(67.7%, 63.1%, 0%, 23.5%)
CIE-LAB	lab(37.17, 36.22, -65.38)
CIE-LCH	lch(37.17, 74.74, 298.98°)
OKLab	oklab(47.3% 0.0114 -0.1887)
OKLCH	oklch(47.3% 0.189 273.4)
XYZ	xyz(14.2143, 9.6303, 52.7289)
Luminance	0.0963 (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

#3F48C3 #C3BA3F

analogous

#3F8AC3 #3F48C3 #783FC3

triadic

#3F48C3 #C33F48 #48C33F

tetradic

#3F48C3 #C33F8A #C3BA3F #3FC378

square

#3F48C3 #C33F8A #C3BA3F #3FC378

split-complementary

#3F48C3 #C3783F #8AC33F

monochromatic

#202567 #2F3696 #3F48C3 #6E74D2 #9CA1E0

Accessibility & contrast

On white

7.18

#3F48C3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3F48C3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48C3

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48C3	#FFFFFF	#000000	##FFFFFF
##3F48C3	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EC7

Deuteranopia (green-blind)

#0052C1

Tritanopia (blue-blind)

#00677F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f48c3;
/* rgb */ color: rgb(63, 72, 195);
/* oklch */ color: oklch(47.3% 0.189 273.4);

Tailwind

colors: {
  custom: {
    50: '#847bd6',
    500: '#3f48c3',
    950: '#000000',
  },
}

SCSS

$custom: #3f48c3;
$custom-light: #847bd6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48c3",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 195
  },
  "hsl": {
    "h": 235.909,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.47297,
    "c": 0.18899,
    "h": 273.4
  },
  "luminance": 0.09632
}

Semantic roles & 50–950 ramp

primary

#3F48C3

secondary

#CCC892

accent

#D24CDC

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F48C3

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

Preview Lab → · Contrast checker → · Palette generator →