#3F49C8#3F49C8

#3F49C8 is a mid, vivid blue. Relative luminance 0.100; OKLCH L 47.9% C 0.194 H 273.1°. Best body text is #FFFFFF at 7.00:1 contrast (WCAG AA passes).

Color values

HEX	#3F49C8
RGB	rgb(63, 73, 200)
HSL	hsl(236, 55%, 52%)
HSV	hsv(236, 69%, 78%)
CMYK	cmyk(68.5%, 63.5%, 0%, 21.6%)
CIE-LAB	lab(37.83, 37.32, -67.23)
CIE-LCH	lch(37.83, 76.89, 299.03°)
OKLab	oklab(47.91% 0.0103 -0.194)
OKLCH	oklch(47.91% 0.194 273.1)
XYZ	xyz(14.8543, 9.9906, 55.7779)
Luminance	0.0999 (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

#3F49C8 #C8BE3F

analogous

#3F8EC8 #3F49C8 #793FC8

triadic

#3F49C8 #C83F49 #49C83F

tetradic

#3F49C8 #C83F8E #C8BE3F #3FC879

square

#3F49C8 #C83F8E #C8BE3F #3FC879

split-complementary

#3F49C8 #C8793F #8EC83F

monochromatic

#1F256D #2D359D #3F49C8 #6F76D6 #9EA3E3

Accessibility & contrast

On white

7.00

#3F49C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

3.00

#3F49C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49C8

7.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49C8	#FFFFFF	#000000	##FFFFFF
##3F49C8	1.00	7.00	3.00	7.00
#FFFFFF	7.00	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	7.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FCC

Deuteranopia (green-blind)

#0053C6

Tritanopia (blue-blind)

#006A82

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3f49c8;
/* rgb */ color: rgb(63, 73, 200);
/* oklch */ color: oklch(47.9% 0.194 273.1);

Tailwind

colors: {
  custom: {
    50: '#857cda',
    500: '#3f49c8',
    950: '#000000',
  },
}

SCSS

$custom: #3f49c8;
$custom-light: #857cda;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49c8",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 200
  },
  "hsl": {
    "h": 235.62,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.47907,
    "c": 0.19432,
    "h": 273.1
  },
  "luminance": 0.09992
}

Semantic roles & 50–950 ramp

primary

#3F49C8

secondary

#D0CB93

accent

#D449DF

background

#F8F7FD

surface

#F0EEFB

border

#CBC9D4

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3F49C8

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

Preview Lab → · Contrast checker → · Palette generator →