#3F64AA#3F64AA

#3F64AA is a mid, moderate blue. Relative luminance 0.131; OKLCH L 51.1% C 0.119 H 262.0°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F64AA
RGB	rgb(63, 100, 170)
HSL	hsl(219, 46%, 46%)
HSV	hsv(219, 63%, 67%)
CMYK	cmyk(62.9%, 41.2%, 0%, 33.3%)
CIE-LAB	lab(42.87, 9.42, -41.52)
CIE-LCH	lch(42.87, 42.57, 282.78°)
OKLab	oklab(51.05% -0.0166 -0.1181)
OKLCH	oklch(51.05% 0.119 262)
XYZ	xyz(13.8602, 13.0721, 39.8152)
Luminance	0.1307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F64AA #AA853F

analogous

#3F99AA #3F64AA #4F3FAA

triadic

#3F64AA #AA3F64 #64AA3F

tetradic

#3F64AA #AA3F99 #AA853F #3FAA4F

square

#3F64AA #AA3F99 #AA853F #3FAA4F

split-complementary

#3F64AA #AA4F3F #99AA3F

monochromatic

#1E2F51 #2E4A7D #3F64AA #6284C5 #8EA7D5

Accessibility & contrast

On white

5.81

#3F64AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3F64AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F64AA

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F64AA	#FFFFFF	#000000	##FFFFFF
##3F64AA	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456BAD

Deuteranopia (green-blind)

#3661A9

Tritanopia (blue-blind)

#00747F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f64aa;
/* rgb */ color: rgb(63, 100, 170);
/* oklch */ color: oklch(51.1% 0.119 262.0);

Tailwind

colors: {
  custom: {
    50: '#7e8fc4',
    500: '#3f64aa',
    950: '#000000',
  },
}

SCSS

$custom: #3f64aa;
$custom-light: #7e8fc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f64aa",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 170
  },
  "hsl": {
    "h": 219.252,
    "s": 45.923,
    "l": 45.686
  },
  "oklch": {
    "l": 0.51051,
    "c": 0.11931,
    "h": 262
  },
  "luminance": 0.13073
}

Semantic roles & 50–950 ramp

primary

#3F64AA

secondary

#C0AC85

accent

#A852D6

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C12

muted

#7C7D81

Preview Lab

Preview with #3F64AA

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

Preview Lab → · Contrast checker → · Palette generator →