#3F49B9#3F49B9

#3F49B9 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.6% C 0.175 H 273.6°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F49B9
RGB	rgb(63, 73, 185)
HSL	hsl(235, 49%, 49%)
HSV	hsv(235, 66%, 73%)
CMYK	cmyk(65.9%, 60.5%, 0%, 27.5%)
CIE-LAB	lab(36.60, 32.12, -60.45)
CIE-LCH	lch(36.60, 68.46, 297.98°)
OKLab	oklab(46.62% 0.011 -0.1742)
OKLCH	oklch(46.62% 0.175 273.6)
XYZ	xyz(13.1865, 9.3235, 46.9942)
Luminance	0.0932 (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

#3F49B9 #B9AF3F

analogous

#3F86B9 #3F49B9 #723FB9

triadic

#3F49B9 #B93F49 #49B93F

tetradic

#3F49B9 #B93F86 #B9AF3F #3FB972

square

#3F49B9 #B93F86 #B9AF3F #3FB972

split-complementary

#3F49B9 #B9723F #86B93F

monochromatic

#20255E #2F378B #3F49B9 #6971CC #979CDC

Accessibility & contrast

On white

7.33

#3F49B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F49B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F49B9

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49B9	#FFFFFF	#000000	##FFFFFF
##3F49B9	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBD

Deuteranopia (green-blind)

#0051B7

Tritanopia (blue-blind)

#00657A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f49b9;
/* rgb */ color: rgb(63, 73, 185);
/* oklch */ color: oklch(46.6% 0.175 273.6);

Tailwind

colors: {
  custom: {
    50: '#827bcf',
    500: '#3f49b9',
    950: '#000000',
  },
}

SCSS

$custom: #3f49b9;
$custom-light: #827bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49b9",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 185
  },
  "hsl": {
    "h": 235.082,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.46624,
    "c": 0.17452,
    "h": 273.6
  },
  "luminance": 0.09325
}

Semantic roles & 50–950 ramp

primary

#3F49B9

secondary

#C7C28D

accent

#CD4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F49B9

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

Preview Lab → · Contrast checker → · Palette generator →