#3F4FAC#3F4FAC

#3F4FAC is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.7% C 0.149 H 272.0°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FAC
RGB	rgb(63, 79, 172)
HSL	hsl(231, 46%, 46%)
HSV	hsv(231, 63%, 67%)
CMYK	cmyk(63.4%, 54.1%, 0%, 32.5%)
CIE-LAB	lab(37.16, 23.68, -51.86)
CIE-LCH	lch(37.16, 57.01, 294.55°)
OKLab	oklab(46.74% 0.0053 -0.1488)
OKLCH	oklch(46.74% 0.149 272)
XYZ	xyz(12.2898, 9.6262, 40.2321)
Luminance	0.0963 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FAC #AC9C3F

analogous

#3F85AC #3F4FAC #653FAC

triadic

#3F4FAC #AC3F4F #4FAC3F

tetradic

#3F4FAC #AC3F85 #AC9C3F #3FAC65

square

#3F4FAC #AC3F85 #AC9C3F #3FAC65

split-complementary

#3F4FAC #AC653F #85AC3F

monochromatic

#1E2652 #2F3A7F #3F4FAC #6371C6 #8F9AD6

Accessibility & contrast

On white

7.18

#3F4FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#3F4FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FAC

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FAC	#FFFFFF	#000000	##FFFFFF
##3F4FAC	1.00	7.18	2.93	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#105CAF

Deuteranopia (green-blind)

#0053AA

Tritanopia (blue-blind)

#006576

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4fac;
/* rgb */ color: rgb(63, 79, 172);
/* oklch */ color: oklch(46.7% 0.149 272.0);

Tailwind

colors: {
  custom: {
    50: '#7f80c5',
    500: '#3f4fac',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fac;
$custom-light: #7f80c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fac",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 172
  },
  "hsl": {
    "h": 231.193,
    "s": 46.383,
    "l": 46.078
  },
  "oklch": {
    "l": 0.46736,
    "c": 0.14891,
    "h": 272
  },
  "luminance": 0.09627
}

Semantic roles & 50–950 ramp

primary

#3F4FAC

secondary

#C1B886

accent

#C352D6

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4FAC

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

Preview Lab → · Contrast checker → · Palette generator →