#3F48CC#3F48CC

#3F48CC is a mid, highly saturated blue. Relative luminance 0.101; OKLCH L 48.1% C 0.201 H 273.1°. Best body text is #FFFFFF at 6.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F48CC
RGB	rgb(63, 72, 204)
HSL	hsl(236, 58%, 52%)
HSV	hsv(236, 69%, 80%)
CMYK	cmyk(69.1%, 64.7%, 0%, 20%)
CIE-LAB	lab(37.93, 39.31, -69.37)
CIE-LCH	lch(37.93, 79.74, 299.54°)
OKLab	oklab(48.09% 0.0108 -0.2003)
OKLCH	oklch(48.09% 0.201 273.1)
XYZ	xyz(15.2627, 10.0497, 58.2505)
Luminance	0.1005 (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

#3F48CC #CCC33F

analogous

#3F8FCC #3F48CC #7C3FCC

triadic

#3F48CC #CC3F48 #48CC3F

tetradic

#3F48CC #CC3F8F #CCC33F #3FCC7C

square

#3F48CC #CC3F8F #CCC33F #3FCC7C

split-complementary

#3F48CC #CC7C3F #8FCC3F

monochromatic

#1E2472 #2B33A3 #3F48CC #6F76D9 #A0A4E6

Accessibility & contrast

On white

6.98

#3F48CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#3F48CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48CC

6.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48CC	#FFFFFF	#000000	##FFFFFF
##3F48CC	1.00	6.98	3.01	6.98
#FFFFFF	6.98	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D0

Deuteranopia (green-blind)

#0053C9

Tritanopia (blue-blind)

#006A83

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f48cc;
/* rgb */ color: rgb(63, 72, 204);
/* oklch */ color: oklch(48.1% 0.201 273.1);

Tailwind

colors: {
  custom: {
    50: '#867bdd',
    500: '#3f48cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f48cc;
$custom-light: #867bdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48cc",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 204
  },
  "hsl": {
    "h": 236.17,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.48089,
    "c": 0.20063,
    "h": 273.1
  },
  "luminance": 0.10051
}

Semantic roles & 50–950 ramp

primary

#3F48CC

secondary

#D2CE95

accent

#D747E1

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F48CC

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

Preview Lab → · Contrast checker → · Palette generator →