#3F64AF#3F64AF

#3F64AF is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.4% C 0.126 H 262.9°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F64AF
RGB	rgb(63, 100, 175)
HSL	hsl(220, 47%, 47%)
HSV	hsv(220, 64%, 69%)
CMYK	cmyk(64%, 42.9%, 0%, 31.4%)
CIE-LAB	lab(43.16, 11.19, -44.00)
CIE-LCH	lch(43.16, 45.40, 284.27°)
OKLab	oklab(51.37% -0.0156 -0.1254)
OKLCH	oklch(51.37% 0.126 262.9)
XYZ	xyz(14.3422, 13.2649, 42.3537)
Luminance	0.1327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64AF #AF8A3F

analogous

#3F9CAF #3F64AF #523FAF

triadic

#3F64AF #AF3F64 #64AF3F

tetradic

#3F64AF #AF3F9C #AF8A3F #3FAF52

square

#3F64AF #AF3F9C #AF8A3F #3FAF52

split-complementary

#3F64AF #AF523F #9CAF3F

monochromatic

#1F3155 #2F4A82 #3F64AF #6485C7 #91A8D7

Accessibility & contrast

On white

5.75

#3F64AF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3F64AF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64AF

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64AF	#FFFFFF	#000000	##FFFFFF
##3F64AF	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#426BB2

Deuteranopia (green-blind)

#3161AD

Tritanopia (blue-blind)

#007581

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f64af;
/* rgb */ color: rgb(63, 100, 175);
/* oklch */ color: oklch(51.4% 0.126 262.9);

Tailwind

colors: {
  custom: {
    50: '#7f8fc7',
    500: '#3f64af',
    950: '#000000',
  },
}

SCSS

$custom: #3f64af;
$custom-light: #7f8fc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64af",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 175
  },
  "hsl": {
    "h": 220.179,
    "s": 47.059,
    "l": 46.667
  },
  "oklch": {
    "l": 0.51367,
    "c": 0.12639,
    "h": 262.9
  },
  "luminance": 0.13266
}

Semantic roles & 50–950 ramp

primary

#3F64AF

secondary

#C3AF87

accent

#AB51D7

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3F64AF

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

Preview Lab → · Contrast checker → · Palette generator →