#3F4FA9#3F4FA9

#3F4FA9 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 46.5% C 0.145 H 272.0°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FA9
RGB	rgb(63, 79, 169)
HSL	hsl(231, 46%, 45%)
HSV	hsv(231, 63%, 66%)
CMYK	cmyk(62.7%, 53.3%, 0%, 33.7%)
CIE-LAB	lab(36.95, 22.62, -50.41)
CIE-LCH	lch(36.95, 55.26, 294.17°)
OKLab	oklab(46.51% 0.0051 -0.1446)
OKLCH	oklch(46.51% 0.145 272)
XYZ	xyz(12.0049, 9.5123, 38.7318)
Luminance	0.0951 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FA9 #A9993F

analogous

#3F84A9 #3F4FA9 #643FA9

triadic

#3F4FA9 #A93F4F #4FA93F

tetradic

#3F4FA9 #A93F84 #A9993F #3FA964

square

#3F4FA9 #A93F84 #A9993F #3FA964

split-complementary

#3F4FA9 #A9643F #84A93F

monochromatic

#1E2550 #2E3A7C #3F4FA9 #6170C4 #8E98D5

Accessibility & contrast

On white

7.23

#3F4FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#3F4FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FA9

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FA9	#FFFFFF	#000000	##FFFFFF
##3F4FA9	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175CAC

Deuteranopia (green-blind)

#0052A7

Tritanopia (blue-blind)

#006474

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4fa9;
/* rgb */ color: rgb(63, 79, 169);
/* oklch */ color: oklch(46.5% 0.145 272.0);

Tailwind

colors: {
  custom: {
    50: '#7f80c3',
    500: '#3f4fa9',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fa9;
$custom-light: #7f80c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fa9",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 169
  },
  "hsl": {
    "h": 230.943,
    "s": 45.69,
    "l": 45.49
  },
  "oklch": {
    "l": 0.46511,
    "c": 0.14466,
    "h": 272
  },
  "luminance": 0.09513
}

Semantic roles & 50–950 ramp

primary

#3F4FA9

secondary

#C0B784

accent

#C252D5

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4FA9

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

Preview Lab → · Contrast checker → · Palette generator →