#3F64D9#3F64D9

#3F64D9 is a mid, vivid blue. Relative luminance 0.152; OKLCH L 54.3% C 0.184 H 266.8°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#3F64D9
RGB	rgb(63, 100, 217)
HSL	hsl(226, 67%, 55%)
HSV	hsv(226, 71%, 85%)
CMYK	cmyk(71%, 53.9%, 0%, 14.9%)
CIE-LAB	lab(45.88, 26.29, -63.89)
CIE-LCH	lch(45.88, 69.09, 292.36°)
OKLab	oklab(54.31% -0.0101 -0.1839)
OKLCH	oklch(54.31% 0.184 266.8)
XYZ	xyz(19.1271, 15.1789, 67.5540)
Luminance	0.1518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64D9 #D9B43F

analogous

#3FB1D9 #3F64D9 #673FD9

triadic

#3F64D9 #D93F64 #64D93F

tetradic

#3F64D9 #D93FB1 #D9B43F #3FD967

square

#3F64D9 #D93FB1 #D9B43F #3FD967

split-complementary

#3F64D9 #D9673F #B1D93F

monochromatic

#1A3384 #2447B7 #3F64D9 #728DE3 #A5B6ED

Accessibility & contrast

On white

5.20

#3F64D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#3F64D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64D9

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64D9	#FFFFFF	#000000	##FFFFFF
##3F64D9	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0074DD

Deuteranopia (green-blind)

#0066D7

Tritanopia (blue-blind)

#008095

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f64d9;
/* rgb */ color: rgb(63, 100, 217);
/* oklch */ color: oklch(54.3% 0.184 266.8);

Tailwind

colors: {
  custom: {
    50: '#878fe6',
    500: '#3f64d9',
    950: '#000000',
  },
}

SCSS

$custom: #3f64d9;
$custom-light: #878fe6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64d9",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 217
  },
  "hsl": {
    "h": 225.584,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5431,
    "c": 0.18422,
    "h": 266.8
  },
  "luminance": 0.15181
}

Semantic roles & 50–950 ramp

primary

#3F64D9

secondary

#DACB9A

accent

#C13EEA

background

#F9F8FE

surface

#F1F0FC

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F64D9

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

Preview Lab → · Contrast checker → · Palette generator →