#3F48D0#3F48D0

#3F48D0 is a mid, highly saturated blue. Relative luminance 0.102; OKLCH L 48.4% C 0.206 H 272.9°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F48D0
RGB	rgb(63, 72, 208)
HSL	hsl(236, 61%, 53%)
HSV	hsv(236, 70%, 82%)
CMYK	cmyk(69.7%, 65.4%, 0%, 18.4%)
CIE-LAB	lab(38.28, 40.67, -71.12)
CIE-LCH	lch(38.28, 81.93, 299.76°)
OKLab	oklab(48.45% 0.0105 -0.2055)
OKLCH	oklch(48.45% 0.206 272.9)
XYZ	xyz(15.7486, 10.2440, 60.8096)
Luminance	0.1025 (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

#3F48D0 #D0C73F

analogous

#3F90D0 #3F48D0 #7E3FD0

triadic

#3F48D0 #D03F48 #48D03F

tetradic

#3F48D0 #D03F90 #D0C73F #3FD07E

square

#3F48D0 #D03F90 #D0C73F #3FD07E

split-complementary

#3F48D0 #D07E3F #90D03F

monochromatic

#1D2377 #2931A9 #3F48D0 #7077DC #A1A6E8

Accessibility & contrast

On white

6.89

#3F48D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#3F48D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48D0

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48D0	#FFFFFF	#000000	##FFFFFF
##3F48D0	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D4

Deuteranopia (green-blind)

#0053CD

Tritanopia (blue-blind)

#006C86

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f48d0;
/* rgb */ color: rgb(63, 72, 208);
/* oklch */ color: oklch(48.4% 0.206 272.9);

Tailwind

colors: {
  custom: {
    50: '#877bdf',
    500: '#3f48d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f48d0;
$custom-light: #877bdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48d0",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 208
  },
  "hsl": {
    "h": 236.276,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.48448,
    "c": 0.20573,
    "h": 272.9
  },
  "luminance": 0.10246
}

Semantic roles & 50–950 ramp

primary

#3F48D0

secondary

#D5D196

accent

#DA44E4

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F48D0

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

Preview Lab → · Contrast checker → · Palette generator →