#3F4BB6#3F4BB6

#3F4BB6 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.7% C 0.168 H 273.2°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BB6
RGB	rgb(63, 75, 182)
HSL	hsl(234, 49%, 48%)
HSV	hsv(234, 65%, 71%)
CMYK	cmyk(65.4%, 58.8%, 0%, 28.6%)
CIE-LAB	lab(36.87, 29.79, -58.26)
CIE-LCH	lch(36.87, 65.43, 297.09°)
OKLab	oklab(46.75% 0.0093 -0.1677)
OKLCH	oklch(46.75% 0.168 273.2)
XYZ	xyz(13.0067, 9.4652, 45.3884)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BB6 #B6AA3F

analogous

#3F86B6 #3F4BB6 #6F3FB6

triadic

#3F4BB6 #B63F4B #4BB63F

tetradic

#3F4BB6 #B63F86 #B6AA3F #3FB66F

square

#3F4BB6 #B63F86 #B6AA3F #3FB66F

split-complementary

#3F4BB6 #B66F3F #86B63F

monochromatic

#20265B #2F3889 #3F4BB6 #6872CB #959CDA

Accessibility & contrast

On white

7.26

#3F4BB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F4BB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BB6

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BB6	#FFFFFF	#000000	##FFFFFF
##3F4BB6	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBA

Deuteranopia (green-blind)

#0052B4

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4bb6;
/* rgb */ color: rgb(63, 75, 182);
/* oklch */ color: oklch(46.7% 0.168 273.2);

Tailwind

colors: {
  custom: {
    50: '#817dcd',
    500: '#3f4bb6',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bb6;
$custom-light: #817dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bb6",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 182
  },
  "hsl": {
    "h": 233.95,
    "s": 48.571,
    "l": 48.039
  },
  "oklch": {
    "l": 0.46747,
    "c": 0.16795,
    "h": 273.2
  },
  "luminance": 0.09466
}

Semantic roles & 50–950 ramp

primary

#3F4BB6

secondary

#C6C08B

accent

#CA50D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0913

muted

#7D7B82

Preview Lab

Preview with #3F4BB6

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

Preview Lab → · Contrast checker → · Palette generator →