#3F4FA4#3F4FA4

#3F4FA4 is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.1% C 0.138 H 271.9°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FA4
RGB	rgb(63, 79, 164)
HSL	hsl(230, 44%, 45%)
HSV	hsv(230, 62%, 64%)
CMYK	cmyk(61.6%, 51.8%, 0%, 35.7%)
CIE-LAB	lab(36.61, 20.86, -47.98)
CIE-LCH	lch(36.61, 52.32, 293.49°)
OKLab	oklab(46.14% 0.0046 -0.1374)
OKLCH	oklch(46.14% 0.138 271.9)
XYZ	xyz(11.5445, 9.3281, 36.3069)
Luminance	0.0933 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FA4 #A4943F

analogous

#3F82A4 #3F4FA4 #623FA4

triadic

#3F4FA4 #A43F4F #4FA43F

tetradic

#3F4FA4 #A43F82 #A4943F #3FA462

square

#3F4FA4 #A43F82 #A4943F #3FA462

split-complementary

#3F4FA4 #A4623F #82A43F

monochromatic

#1D244C #2E3A78 #3F4FA4 #5F6EC1 #8B96D2

Accessibility & contrast

On white

7.33

#3F4FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#3F4FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FA4

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FA4	#FFFFFF	#000000	##FFFFFF
##3F4FA4	1.00	7.33	2.87	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5BA7

Deuteranopia (green-blind)

#0352A2

Tritanopia (blue-blind)

#006372

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f4fa4;
/* rgb */ color: rgb(63, 79, 164);
/* oklch */ color: oklch(46.1% 0.138 271.9);

Tailwind

colors: {
  custom: {
    50: '#7e80bf',
    500: '#3f4fa4',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fa4;
$custom-light: #7e80bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fa4",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 164
  },
  "hsl": {
    "h": 230.495,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.46142,
    "c": 0.13751,
    "h": 271.9
  },
  "luminance": 0.09329
}

Semantic roles & 50–950 ramp

primary

#3F4FA4

secondary

#BDB482

accent

#C054D4

background

#F8F7FB

surface

#EFEEF7

border

#CAC9D0

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #3F4FA4

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

Preview Lab → · Contrast checker → · Palette generator →