#3F4EB5#3F4EB5

#3F4EB5 is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.2% C 0.163 H 272.3°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F4EB5
RGB	rgb(63, 78, 181)
HSL	hsl(232, 48%, 48%)
HSV	hsv(232, 65%, 71%)
CMYK	cmyk(65.2%, 56.9%, 0%, 29%)
CIE-LAB	lab(37.55, 27.51, -56.55)
CIE-LCH	lch(37.55, 62.88, 295.95°)
OKLab	oklab(47.24% 0.0066 -0.1626)
OKLCH	oklch(47.24% 0.163 272.3)
XYZ	xyz(13.1120, 9.8406, 44.9155)
Luminance	0.0984 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4EB5 #B5A63F

analogous

#3F89B5 #3F4EB5 #6B3FB5

triadic

#3F4EB5 #B53F4E #4EB53F

tetradic

#3F4EB5 #B53F89 #B5A63F #3FB56B

square

#3F4EB5 #B53F89 #B5A63F #3FB56B

split-complementary

#3F4EB5 #B56B3F #89B53F

monochromatic

#1F275A #2F3A88 #3F4EB5 #6774CA #949DDA

Accessibility & contrast

On white

7.07

#3F4EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F4EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4EB5

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4EB5	#FFFFFF	#000000	##FFFFFF
##3F4EB5	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB9

Deuteranopia (green-blind)

#0053B3

Tritanopia (blue-blind)

#00677A

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4eb5;
/* rgb */ color: rgb(63, 78, 181);
/* oklch */ color: oklch(47.2% 0.163 272.3);

Tailwind

colors: {
  custom: {
    50: '#817fcc',
    500: '#3f4eb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f4eb5;
$custom-light: #817fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4eb5",
  "rgb": {
    "r": 63,
    "g": 78,
    "b": 181
  },
  "hsl": {
    "h": 232.373,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.47237,
    "c": 0.16276,
    "h": 272.3
  },
  "luminance": 0.09842
}

Semantic roles & 50–950 ramp

primary

#3F4EB5

secondary

#C5BE8A

accent

#C750D8

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4EB5

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

Preview Lab → · Contrast checker → · Palette generator →