#3F72D5#3F72D5

#3F72D5 is a mid, vivid blue. Relative luminance 0.179; OKLCH L 56.9% C 0.162 H 262.1°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3F72D5
RGB	rgb(63, 114, 213)
HSL	hsl(220, 64%, 54%)
HSV	hsv(220, 70%, 84%)
CMYK	cmyk(70.4%, 46.5%, 0%, 16.5%)
CIE-LAB	lab(49.37, 16.01, -55.99)
CIE-LCH	lch(49.37, 58.23, 285.95°)
OKLab	oklab(56.88% -0.0223 -0.1605)
OKLCH	oklch(56.88% 0.162 262.1)
XYZ	xyz(20.0732, 17.8934, 65.3338)
Luminance	0.1789 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F72D5 #D5A23F

analogous

#3FBDD5 #3F72D5 #573FD5

triadic

#3F72D5 #D53F72 #72D53F

tetradic

#3F72D5 #D53FBD #D5A23F #3FD557

square

#3F72D5 #D53FBD #D5A23F #3FD557

split-complementary

#3F72D5 #D5573F #BDD53F

monochromatic

#1C3D7E #2755B0 #3F72D5 #7197E0 #A3BCEB

Accessibility & contrast

On white

4.59

#3F72D5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#3F72D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F72D5

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F72D5	#FFFFFF	#000000	##FFFFFF
##3F72D5	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7DD9

Deuteranopia (green-blind)

#1C6FD3

Tritanopia (blue-blind)

#008999

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3f72d5;
/* rgb */ color: rgb(63, 114, 213);
/* oklch */ color: oklch(56.9% 0.162 262.1);

Tailwind

colors: {
  custom: {
    50: '#869ae2',
    500: '#3f72d5',
    950: '#000000',
  },
}

SCSS

$custom: #3f72d5;
$custom-light: #869ae2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f72d5",
  "rgb": {
    "r": 63,
    "g": 114,
    "b": 213
  },
  "hsl": {
    "h": 219.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.5688,
    "c": 0.16201,
    "h": 262.1
  },
  "luminance": 0.17895
}

Semantic roles & 50–950 ramp

primary

#3F72D5

secondary

#D8C298

accent

#AF41E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F72D5

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

Preview Lab → · Contrast checker → · Palette generator →