#3F4ABB#3F4ABB

#3F4ABB is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.0% C 0.176 H 273.3°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#3F4ABB
RGB	rgb(63, 74, 187)
HSL	hsl(235, 50%, 49%)
HSV	hsv(235, 66%, 73%)
CMYK	cmyk(66.3%, 60.4%, 0%, 26.7%)
CIE-LAB	lab(37.01, 32.18, -60.97)
CIE-LCH	lch(37.01, 68.94, 297.83°)
OKLab	oklab(46.97% 0.0101 -0.1757)
OKLCH	oklch(46.97% 0.176 273.3)
XYZ	xyz(13.4653, 9.5410, 48.1361)
Luminance	0.0954 (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

#3F4ABB #BBB03F

analogous

#3F88BB #3F4ABB #723FBB

triadic

#3F4ABB #BB3F4A #4ABB3F

tetradic

#3F4ABB #BB3F88 #BBB03F #3FBB72

square

#3F4ABB #BB3F88 #BBB03F #3FBB72

split-complementary

#3F4ABB #BB723F #88BB3F

monochromatic

#20265F #30388D #3F4ABB #6A73CD #989EDC

Accessibility & contrast

On white

7.22

#3F4ABB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#3F4ABB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4ABB

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4ABB	#FFFFFF	#000000	##FFFFFF
##3F4ABB	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DBF

Deuteranopia (green-blind)

#0052B9

Tritanopia (blue-blind)

#00667B

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4abb;
/* rgb */ color: rgb(63, 74, 187);
/* oklch */ color: oklch(47.0% 0.176 273.3);

Tailwind

colors: {
  custom: {
    50: '#837cd0',
    500: '#3f4abb',
    950: '#000000',
  },
}

SCSS

$custom: #3f4abb;
$custom-light: #837cd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4abb",
  "rgb": {
    "r": 63,
    "g": 74,
    "b": 187
  },
  "hsl": {
    "h": 234.677,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.46974,
    "c": 0.17596,
    "h": 273.3
  },
  "luminance": 0.09542
}

Semantic roles & 50–950 ramp

primary

#3F4ABB

secondary

#C8C38E

accent

#CD4FD9

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4ABB

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

Preview Lab → · Contrast checker → · Palette generator →