#3F64CF#3F64CF

#3F64CF is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.6% C 0.171 H 266.3°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#3F64CF
RGB	rgb(63, 100, 207)
HSL	hsl(225, 60%, 53%)
HSV	hsv(225, 70%, 81%)
CMYK	cmyk(69.6%, 51.7%, 0%, 18.8%)
CIE-LAB	lab(45.18, 22.69, -59.30)
CIE-LCH	lch(45.18, 63.49, 290.94°)
OKLab	oklab(53.57% -0.011 -0.1704)
OKLCH	oklch(53.57% 0.171 266.3)
XYZ	xyz(17.8656, 14.6743, 60.9103)
Luminance	0.1468 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64CF #CFAA3F

analogous

#3FACCF #3F64CF #623FCF

triadic

#3F64CF #CF3F64 #64CF3F

tetradic

#3F64CF #CF3FAC #CFAA3F #3FCF62

square

#3F64CF #CF3FAC #CFAA3F #3FCF62

split-complementary

#3F64CF #CF623F #ACCF3F

monochromatic

#1E3476 #2A4AA7 #3F64CF #708CDB #A1B3E7

Accessibility & contrast

On white

5.34

#3F64CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3F64CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64CF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64CF	#FFFFFF	#000000	##FFFFFF
##3F64CF	1.00	5.34	3.94	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F72D3

Deuteranopia (green-blind)

#0065CD

Tritanopia (blue-blind)

#007D90

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f64cf;
/* rgb */ color: rgb(63, 100, 207);
/* oklch */ color: oklch(53.6% 0.171 266.3);

Tailwind

colors: {
  custom: {
    50: '#858fde',
    500: '#3f64cf',
    950: '#000000',
  },
}

SCSS

$custom: #3f64cf;
$custom-light: #858fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64cf",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 207
  },
  "hsl": {
    "h": 224.583,
    "s": 60,
    "l": 52.941
  },
  "oklch": {
    "l": 0.53565,
    "c": 0.17079,
    "h": 266.3
  },
  "luminance": 0.14676
}

Semantic roles & 50–950 ramp

primary

#3F64CF

secondary

#D4C496

accent

#BA45E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3F64CF

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

Preview Lab → · Contrast checker → · Palette generator →