#3F4CAF#3F4CAF

#3F4CAF is a mid, vivid blue. Relative luminance 0.093; OKLCH L 46.4% C 0.157 H 273.0°. Best body text is #FFFFFF at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#3F4CAF
RGB	rgb(63, 76, 175)
HSL	hsl(233, 47%, 47%)
HSV	hsv(233, 64%, 69%)
CMYK	cmyk(64%, 56.6%, 0%, 31.4%)
CIE-LAB	lab(36.59, 26.69, -54.56)
CIE-LCH	lch(36.59, 60.74, 296.07°)
OKLab	oklab(46.38% 0.0083 -0.1568)
OKLCH	oklch(46.38% 0.157 273)
XYZ	xyz(12.3696, 9.3197, 41.6962)
Luminance	0.0932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4CAF #AFA23F

analogous

#3F84AF #3F4CAF #6A3FAF

triadic

#3F4CAF #AF3F4C #4CAF3F

tetradic

#3F4CAF #AF3F84 #AFA23F #3FAF6A

square

#3F4CAF #AF3F84 #AFA23F #3FAF6A

split-complementary

#3F4CAF #AF6A3F #84AF3F

monochromatic

#1F2555 #2F3882 #3F4CAF #6470C7 #9199D7

Accessibility & contrast

On white

7.33

#3F4CAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#3F4CAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4CAF

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4CAF	#FFFFFF	#000000	##FFFFFF
##3F4CAF	1.00	7.33	2.86	7.33
#FFFFFF	7.33	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BB2

Deuteranopia (green-blind)

#0051AD

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #3f4caf;
/* rgb */ color: rgb(63, 76, 175);
/* oklch */ color: oklch(46.4% 0.157 273.0);

Tailwind

colors: {
  custom: {
    50: '#807dc8',
    500: '#3f4caf',
    950: '#000000',
  },
}

SCSS

$custom: #3f4caf;
$custom-light: #807dc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4caf",
  "rgb": {
    "r": 63,
    "g": 76,
    "b": 175
  },
  "hsl": {
    "h": 233.036,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.46378,
    "c": 0.15703,
    "h": 273
  },
  "luminance": 0.09321
}

Semantic roles & 50–950 ramp

primary

#3F4CAF

secondary

#C3BC87

accent

#C751D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3F4CAF

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

Preview Lab → · Contrast checker → · Palette generator →