#3F48C0#3F48C0

#3F48C0 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.185 H 273.6°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F48C0
RGB	rgb(63, 72, 192)
HSL	hsl(236, 51%, 50%)
HSV	hsv(236, 67%, 75%)
CMYK	cmyk(67.2%, 62.5%, 0%, 24.7%)
CIE-LAB	lab(36.92, 35.18, -64.04)
CIE-LCH	lch(36.92, 73.06, 298.78°)
OKLab	oklab(47.04% 0.0115 -0.1847)
OKLCH	oklch(47.04% 0.185 273.6)
XYZ	xyz(13.8785, 9.4960, 50.9605)
Luminance	0.0950 (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

#3F48C0 #C0B73F

analogous

#3F88C0 #3F48C0 #773FC0

triadic

#3F48C0 #C03F48 #48C03F

tetradic

#3F48C0 #C03F88 #C0B73F #3FC077

square

#3F48C0 #C03F88 #C0B73F #3FC077

split-complementary

#3F48C0 #C0773F #88C03F

monochromatic

#212564 #303792 #3F48C0 #6D74CF #9BA0DE

Accessibility & contrast

On white

7.24

#3F48C0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F48C0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48C0

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48C0	#FFFFFF	#000000	##FFFFFF
##3F48C0	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC4

Deuteranopia (green-blind)

#0051BE

Tritanopia (blue-blind)

#00667D

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f48c0;
/* rgb */ color: rgb(63, 72, 192);
/* oklch */ color: oklch(47.0% 0.185 273.6);

Tailwind

colors: {
  custom: {
    50: '#847bd4',
    500: '#3f48c0',
    950: '#000000',
  },
}

SCSS

$custom: #3f48c0;
$custom-light: #847bd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48c0",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 192
  },
  "hsl": {
    "h": 235.814,
    "s": 50.588,
    "l": 50
  },
  "oklch": {
    "l": 0.47038,
    "c": 0.18506,
    "h": 273.6
  },
  "luminance": 0.09497
}

Semantic roles & 50–950 ramp

primary

#3F48C0

secondary

#CAC691

accent

#D04EDA

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0914

muted

#7D7B83

Preview Lab

Preview with #3F48C0

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

Preview Lab → · Contrast checker → · Palette generator →