#3F48CF#3F48CF

#3F48CF is a mid, highly saturated blue. Relative luminance 0.102; OKLCH L 48.4% C 0.204 H 273.0°. Best body text is #FFFFFF at 6.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F48CF
RGB	rgb(63, 72, 207)
HSL	hsl(236, 60%, 53%)
HSV	hsv(236, 70%, 81%)
CMYK	cmyk(69.6%, 65.2%, 0%, 18.8%)
CIE-LAB	lab(38.19, 40.33, -70.69)
CIE-LCH	lch(38.19, 81.38, 299.71°)
OKLab	oklab(48.36% 0.0106 -0.2042)
OKLCH	oklch(48.36% 0.204 273)
XYZ	xyz(15.6260, 10.1950, 60.1637)
Luminance	0.1020 (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

#3F48CF #CFC63F

analogous

#3F90CF #3F48CF #7E3FCF

triadic

#3F48CF #CF3F48 #48CF3F

tetradic

#3F48CF #CF3F90 #CFC63F #3FCF7E

square

#3F48CF #CF3F90 #CFC63F #3FCF7E

split-complementary

#3F48CF #CF7E3F #90CF3F

monochromatic

#1E2376 #2A32A7 #3F48CF #7077DB #A1A5E7

Accessibility & contrast

On white

6.91

#3F48CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3F48CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F48CF

6.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F48CF	#FFFFFF	#000000	##FFFFFF
##3F48CF	1.00	6.91	3.04	6.91
#FFFFFF	6.91	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D3

Deuteranopia (green-blind)

#0053CC

Tritanopia (blue-blind)

#006C85

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f48cf;
/* rgb */ color: rgb(63, 72, 207);
/* oklch */ color: oklch(48.4% 0.204 273.0);

Tailwind

colors: {
  custom: {
    50: '#877bdf',
    500: '#3f48cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f48cf;
$custom-light: #877bdf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f48cf",
  "rgb": {
    "r": 63,
    "g": 72,
    "b": 207
  },
  "hsl": {
    "h": 236.25,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.48358,
    "c": 0.20446,
    "h": 273
  },
  "luminance": 0.10196
}

Semantic roles & 50–950 ramp

primary

#3F48CF

secondary

#D4D096

accent

#D945E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F48CF

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

Preview Lab → · Contrast checker → · Palette generator →