#3F5EB5#3F5EB5

#3F5EB5 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.5% C 0.142 H 266.6°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#3F5EB5
RGB	rgb(63, 94, 181)
HSL	hsl(224, 48%, 48%)
HSV	hsv(224, 65%, 71%)
CMYK	cmyk(65.2%, 48.1%, 0%, 29%)
CIE-LAB	lab(41.84, 17.18, -49.63)
CIE-LCH	lch(41.84, 52.52, 289.09°)
OKLab	oklab(50.47% -0.0085 -0.1421)
OKLCH	oklch(50.47% 0.142 266.6)
XYZ	xyz(14.3902, 12.3970, 45.3416)
Luminance	0.1240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F5EB5 #B5963F

analogous

#3F99B5 #3F5EB5 #5B3FB5

triadic

#3F5EB5 #B53F5E #5EB53F

tetradic

#3F5EB5 #B53F99 #B5963F #3FB55B

square

#3F5EB5 #B53F99 #B5963F #3FB55B

split-complementary

#3F5EB5 #B55B3F #99B53F

monochromatic

#1F2F5A #2F4688 #3F5EB5 #6781CA #94A7DA

Accessibility & contrast

On white

6.04

#3F5EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#3F5EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F5EB5

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F5EB5	#FFFFFF	#000000	##FFFFFF
##3F5EB5	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3168B8

Deuteranopia (green-blind)

#185EB3

Tritanopia (blue-blind)

#007281

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3f5eb5;
/* rgb */ color: rgb(63, 94, 181);
/* oklch */ color: oklch(50.5% 0.142 266.6);

Tailwind

colors: {
  custom: {
    50: '#808bcc',
    500: '#3f5eb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f5eb5;
$custom-light: #808bcc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f5eb5",
  "rgb": {
    "r": 63,
    "g": 94,
    "b": 181
  },
  "hsl": {
    "h": 224.237,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.50473,
    "c": 0.14231,
    "h": 266.6
  },
  "luminance": 0.12398
}

Semantic roles & 50–950 ramp

primary

#3F5EB5

secondary

#C5B68A

accent

#B450D8

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3F5EB5

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

Preview Lab → · Contrast checker → · Palette generator →