#3F48C9#3F48C9

#3F48C9 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.8% C 0.197 H 273.2°. Best body text is #FFFFFF at 7.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F48C9
RGB	rgb(63, 72, 201)
HSL	hsl(236, 56%, 52%)
HSV	hsv(236, 69%, 79%)
CMYK	cmyk(68.7%, 64.2%, 0%, 21.2%)
CIE-LAB	lab(37.68, 38.28, -68.05)
CIE-LCH	lch(37.68, 78.08, 299.36°)
OKLab	oklab(47.82% 0.011 -0.1965)
OKLCH	oklch(47.82% 0.197 273.2)
XYZ	xyz(14.9064, 9.9071, 56.3737)
Luminance	0.0991 (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

#3F48C9 #C9C03F

analogous

#3F8DC9 #3F48C9 #7B3FC9

triadic

#3F48C9 #C93F48 #48C93F

tetradic

#3F48C9 #C93F8D #C9C03F #3FC97B

square

#3F48C9 #C93F8D #C9C03F #3FC97B

split-complementary

#3F48C9 #C97B3F #8DC93F

monochromatic

#1F246F #2D349E #3F48C9 #6F76D6 #9FA3E4

Accessibility & contrast

On white

7.04

#3F48C9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.98

#3F48C9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F48C9

7.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48C9	#FFFFFF	#000000	##FFFFFF
##3F48C9	1.00	7.04	2.98	7.04
#FFFFFF	7.04	1.00	21.00	1.00
#000000	2.98	21.00	1.00	21.00
##FFFFFF	7.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FCD

Deuteranopia (green-blind)

#0052C7

Tritanopia (blue-blind)

#006982

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f48c9;
/* rgb */ color: rgb(63, 72, 201);
/* oklch */ color: oklch(47.8% 0.197 273.2);

Tailwind

colors: {
  custom: {
    50: '#867bda',
    500: '#3f48c9',
    950: '#000000',
  },
}

SCSS

$custom: #3f48c9;
$custom-light: #867bda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48c9",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 201
  },
  "hsl": {
    "h": 236.087,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.47823,
    "c": 0.19678,
    "h": 273.2
  },
  "luminance": 0.09909
}

Semantic roles & 50–950 ramp

primary

#3F48C9

secondary

#D0CC94

accent

#D648DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0D0915

muted

#7D7B83

Preview Lab

Preview with #3F48C9

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

Preview Lab → · Contrast checker → · Palette generator →