#3F4BB7#3F4BB7

#3F4BB7 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.8% C 0.169 H 273.1°. Best body text is #FFFFFF at 7.24:1 contrast (WCAG AA passes).

Color values

HEX	#3F4BB7
RGB	rgb(63, 75, 183)
HSL	hsl(234, 49%, 48%)
HSV	hsv(234, 66%, 72%)
CMYK	cmyk(65.6%, 59%, 0%, 28.2%)
CIE-LAB	lab(36.94, 30.14, -58.72)
CIE-LCH	lch(36.94, 66.01, 297.17°)
OKLab	oklab(46.83% 0.0093 -0.1691)
OKLCH	oklch(46.83% 0.169 273.1)
XYZ	xyz(13.1104, 9.5067, 45.9346)
Luminance	0.0951 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4BB7 #B7AB3F

analogous

#3F87B7 #3F4BB7 #6F3FB7

triadic

#3F4BB7 #B73F4B #4BB73F

tetradic

#3F4BB7 #B73F87 #B7AB3F #3FB76F

square

#3F4BB7 #B73F87 #B7AB3F #3FB76F

split-complementary

#3F4BB7 #B76F3F #87B73F

monochromatic

#20265C #2F3889 #3F4BB7 #6872CB #969DDB

Accessibility & contrast

On white

7.24

#3F4BB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F4BB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4BB7

7.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4BB7	#FFFFFF	#000000	##FFFFFF
##3F4BB7	1.00	7.24	2.90	7.24
#FFFFFF	7.24	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CBB

Deuteranopia (green-blind)

#0052B5

Tritanopia (blue-blind)

#006579

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4bb7;
/* rgb */ color: rgb(63, 75, 183);
/* oklch */ color: oklch(46.8% 0.169 273.1);

Tailwind

colors: {
  custom: {
    50: '#827dcd',
    500: '#3f4bb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f4bb7;
$custom-light: #827dcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4bb7",
  "rgb": {
    "r": 63,
    "g": 75,
    "b": 183
  },
  "hsl": {
    "h": 234,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.46828,
    "c": 0.16932,
    "h": 273.1
  },
  "luminance": 0.09508
}

Semantic roles & 50–950 ramp

primary

#3F4BB7

secondary

#C6C08B

accent

#CB4FD8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0C0914

muted

#7D7B82

Preview Lab

Preview with #3F4BB7

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

Preview Lab → · Contrast checker → · Palette generator →