#3F4CB2#3F4CB2

#3F4CB2 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.6% C 0.161 H 273.0°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CB2
RGB	rgb(63, 76, 178)
HSL	hsl(233, 48%, 47%)
HSV	hsv(233, 65%, 70%)
CMYK	cmyk(64.6%, 57.3%, 0%, 30.2%)
CIE-LAB	lab(36.82, 27.75, -55.97)
CIE-LCH	lch(36.82, 62.47, 296.37°)
OKLab	oklab(46.62% 0.0084 -0.161)
OKLCH	oklch(46.62% 0.161 273)
XYZ	xyz(12.6675, 9.4389, 43.2652)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CB2 #B2A53F

analogous

#3F86B2 #3F4CB2 #6B3FB2

triadic

#3F4CB2 #B23F4C #4CB23F

tetradic

#3F4CB2 #B23F86 #B2A53F #3FB26B

square

#3F4CB2 #B23F86 #B2A53F #3FB26B

split-complementary

#3F4CB2 #B26B3F #86B23F

monochromatic

#1F2558 #2F3985 #3F4CB2 #6671C9 #939BD9

Accessibility & contrast

On white

7.27

#3F4CB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F4CB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CB2

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CB2	#FFFFFF	#000000	##FFFFFF
##3F4CB2	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CB5

Deuteranopia (green-blind)

#0052B0

Tritanopia (blue-blind)

#006577

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4cb2;
/* rgb */ color: rgb(63, 76, 178);
/* oklch */ color: oklch(46.6% 0.161 273.0);

Tailwind

colors: {
  custom: {
    50: '#817eca',
    500: '#3f4cb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4cb2;
$custom-light: #817eca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4cb2",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 178
  },
  "hsl": {
    "h": 233.217,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.46615,
    "c": 0.16119,
    "h": 273
  },
  "luminance": 0.0944
}

Semantic roles & 50–950 ramp

primary

#3F4CB2

secondary

#C4BD89

accent

#C850D7

background

#F8F7FC

surface

#F0EEF8

border

#CBC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F4CB2

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

Preview Lab → · Contrast checker → · Palette generator →