#3F65D3#3F65D3

#3F65D3 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.1% C 0.175 H 266.3°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3F65D3
RGB	rgb(63, 101, 211)
HSL	hsl(225, 63%, 54%)
HSV	hsv(225, 70%, 83%)
CMYK	cmyk(70.1%, 52.1%, 0%, 17.3%)
CIE-LAB	lab(45.72, 23.49, -60.72)
CIE-LCH	lch(45.72, 65.11, 291.15°)
OKLab	oklab(54.06% -0.0114 -0.1746)
OKLCH	oklch(54.06% 0.175 266.3)
XYZ	xyz(18.4573, 15.0654, 63.5506)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F65D3 #D3AD3F

analogous

#3FAFD3 #3F65D3 #633FD3

triadic

#3F65D3 #D33F65 #65D33F

tetradic

#3F65D3 #D33FAF #D3AD3F #3FD363

square

#3F65D3 #D33FAF #D3AD3F #3FD363

split-complementary

#3F65D3 #D3633F #AFD33F

monochromatic

#1C357B #284AAD #3F65D3 #718DDE #A3B5EA

Accessibility & contrast

On white

5.23

#3F65D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#3F65D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F65D3

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F65D3	#FFFFFF	#000000	##FFFFFF
##3F65D3	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B73D7

Deuteranopia (green-blind)

#0066D1

Tritanopia (blue-blind)

#007F92

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f65d3;
/* rgb */ color: rgb(63, 101, 211);
/* oklch */ color: oklch(54.1% 0.175 266.3);

Tailwind

colors: {
  custom: {
    50: '#8690e1',
    500: '#3f65d3',
    950: '#000000',
  },
}

SCSS

$custom: #3f65d3;
$custom-light: #8690e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f65d3",
  "rgb": {
    "r": 63,
    "g": 101,
    "b": 211
  },
  "hsl": {
    "h": 224.595,
    "s": 62.712,
    "l": 53.725
  },
  "oklch": {
    "l": 0.5406,
    "c": 0.17497,
    "h": 266.3
  },
  "luminance": 0.15067
}

Semantic roles & 50–950 ramp

primary

#3F65D3

secondary

#D7C697

accent

#BC42E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F65D3

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

Preview Lab → · Contrast checker → · Palette generator →