#3F46C5#3F46C5

#3F46C5 is a mid, vivid blue. Relative luminance 0.095; OKLCH L 47.1% C 0.194 H 273.8°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#3F46C5
RGB	rgb(63, 70, 197)
HSL	hsl(237, 54%, 51%)
HSV	hsv(237, 68%, 77%)
CMYK	cmyk(68%, 64.5%, 0%, 22.7%)
CIE-LAB	lab(36.87, 38.14, -67.05)
CIE-LCH	lch(36.87, 77.14, 299.64°)
OKLab	oklab(47.13% 0.0127 -0.1935)
OKLCH	oklch(47.13% 0.194 273.8)
XYZ	xyz(14.3147, 9.4670, 53.8854)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F46C5 #C5BE3F

analogous

#3F89C5 #3F46C5 #7B3FC5

triadic

#3F46C5 #C53F46 #46C53F

tetradic

#3F46C5 #C53F89 #C5BE3F #3FC57B

square

#3F46C5 #C53F89 #C5BE3F #3FC57B

split-complementary

#3F46C5 #C57B3F #89C53F

monochromatic

#20246A #2E3499 #3F46C5 #6E73D3 #9DA1E1

Accessibility & contrast

On white

7.26

#3F46C5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F46C5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F46C5

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F46C5	#FFFFFF	#000000	##FFFFFF
##3F46C5	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC9

Deuteranopia (green-blind)

#0051C3

Tritanopia (blue-blind)

#00677F

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f46c5;
/* rgb */ color: rgb(63, 70, 197);
/* oklch */ color: oklch(47.1% 0.194 273.8);

Tailwind

colors: {
  custom: {
    50: '#857ad8',
    500: '#3f46c5',
    950: '#000000',
  },
}

SCSS

$custom: #3f46c5;
$custom-light: #857ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f46c5",
  "rgb": {
    "r": 63,
    "g": 70,
    "b": 197
  },
  "hsl": {
    "h": 236.866,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.47128,
    "c": 0.19395,
    "h": 273.8
  },
  "luminance": 0.09468
}

Semantic roles & 50–950 ramp

primary

#3F46C5

secondary

#CECA92

accent

#D54BDD

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0915

muted

#7D7B83

Preview Lab

Preview with #3F46C5

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

Preview Lab → · Contrast checker → · Palette generator →