#3F64BF#3F64BF

#3F64BF is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.4% C 0.149 H 265.0°. Best body text is #FFFFFF at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#3F64BF
RGB	rgb(63, 100, 191)
HSL	hsl(223, 50%, 50%)
HSV	hsv(223, 67%, 75%)
CMYK	cmyk(67%, 47.6%, 0%, 25.1%)
CIE-LAB	lab(44.13, 16.92, -51.77)
CIE-LCH	lch(44.13, 54.47, 288.10°)
OKLab	oklab(52.43% -0.0129 -0.1483)
OKLCH	oklch(52.43% 0.149 265)
XYZ	xyz(16.0078, 13.9311, 51.1255)
Luminance	0.1393 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64BF #BF9A3F

analogous

#3FA4BF #3F64BF #5A3FBF

triadic

#3F64BF #BF3F64 #64BF3F

tetradic

#3F64BF #BF3FA4 #BF9A3F #3FBF5A

square

#3F64BF #BF3FA4 #BF9A3F #3FBF5A

split-complementary

#3F64BF #BF5A3F #A4BF3F

monochromatic

#213463 #304C91 #3F64BF #6D89CF #9BAEDE

Accessibility & contrast

On white

5.55

#3F64BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#3F64BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64BF

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64BF	#FFFFFF	#000000	##FFFFFF
##3F64BF	1.00	5.55	3.79	5.55
#FFFFFF	5.55	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356FC2

Deuteranopia (green-blind)

#1863BD

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3f64bf;
/* rgb */ color: rgb(63, 100, 191);
/* oklch */ color: oklch(52.4% 0.149 265.0);

Tailwind

colors: {
  custom: {
    50: '#828fd3',
    500: '#3f64bf',
    950: '#000000',
  },
}

SCSS

$custom: #3f64bf;
$custom-light: #828fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64bf",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 191
  },
  "hsl": {
    "h": 222.656,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.52429,
    "c": 0.14883,
    "h": 265
  },
  "luminance": 0.13933
}

Semantic roles & 50–950 ramp

primary

#3F64BF

secondary

#CAB990

accent

#B14EDA

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3F64BF

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

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