#3F72D2#3F72D2

#3F72D2 is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.7% C 0.158 H 261.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F72D2
RGB	rgb(63, 114, 210)
HSL	hsl(219, 62%, 54%)
HSV	hsv(219, 70%, 82%)
CMYK	cmyk(70%, 45.7%, 0%, 17.6%)
CIE-LAB	lab(49.18, 14.92, -54.58)
CIE-LCH	lch(49.18, 56.58, 285.29°)
OKLab	oklab(56.68% -0.0228 -0.1563)
OKLCH	oklch(56.68% 0.158 261.7)
XYZ	xyz(19.6959, 17.7425, 63.3469)
Luminance	0.1774 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F72D2 #D29F3F

analogous

#3FBBD2 #3F72D2 #553FD2

triadic

#3F72D2 #D23F72 #72D23F

tetradic

#3F72D2 #D23FBB #D29F3F #3FD255

square

#3F72D2 #D23FBB #D29F3F #3FD255

split-complementary

#3F72D2 #D2553F #BBD23F

monochromatic

#1D3D7A #2856AC #3F72D2 #7196DE #A2BBE9

Accessibility & contrast

On white

4.62

#3F72D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3F72D2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F72D2

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F72D2	#FFFFFF	#000000	##FFFFFF
##3F72D2	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#417CD6

Deuteranopia (green-blind)

#226FD0

Tritanopia (blue-blind)

#008898

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3f72d2;
/* rgb */ color: rgb(63, 114, 210);
/* oklch */ color: oklch(56.7% 0.158 261.7);

Tailwind

colors: {
  custom: {
    50: '#859ae0',
    500: '#3f72d2',
    950: '#000000',
  },
}

SCSS

$custom: #3f72d2;
$custom-light: #859ae0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f72d2",
  "rgb": {
    "r": 63,
    "g": 114,
    "b": 210
  },
  "hsl": {
    "h": 219.184,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.56679,
    "c": 0.15797,
    "h": 261.7
  },
  "luminance": 0.17745
}

Semantic roles & 50–950 ramp

primary

#3F72D2

secondary

#D6C097

accent

#AD43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F72D2

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

Preview Lab → · Contrast checker → · Palette generator →