#3F63AE#3F63AE

#3F63AE is a mid, vivid blue. Relative luminance 0.130; OKLCH L 51.1% C 0.126 H 263.3°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#3F63AE
RGB	rgb(63, 99, 174)
HSL	hsl(221, 47%, 46%)
HSV	hsv(221, 64%, 68%)
CMYK	cmyk(63.8%, 43.1%, 0%, 31.8%)
CIE-LAB	lab(42.82, 11.47, -43.96)
CIE-LCH	lch(42.82, 45.43, 284.63°)
OKLab	oklab(51.08% -0.0147 -0.1253)
OKLCH	oklch(51.08% 0.126 263.3)
XYZ	xyz(14.1491, 13.0351, 41.8066)
Luminance	0.1304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F63AE #AE8A3F

analogous

#3F9BAE #3F63AE #533FAE

triadic

#3F63AE #AE3F63 #63AE3F

tetradic

#3F63AE #AE3F9B #AE8A3F #3FAE53

square

#3F63AE #AE3F9B #AE8A3F #3FAE53

split-complementary

#3F63AE #AE533F #9BAE3F

monochromatic

#1E3054 #2F4981 #3F63AE #6484C7 #90A7D7

Accessibility & contrast

On white

5.82

#3F63AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3F63AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F63AE

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F63AE	#FFFFFF	#000000	##FFFFFF
##3F63AE	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#416BB1

Deuteranopia (green-blind)

#3060AC

Tritanopia (blue-blind)

#007480

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3f63ae;
/* rgb */ color: rgb(63, 99, 174);
/* oklch */ color: oklch(51.1% 0.126 263.3);

Tailwind

colors: {
  custom: {
    50: '#7f8fc6',
    500: '#3f63ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f63ae;
$custom-light: #7f8fc6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f63ae",
  "rgb": {
    "r": 63,
    "g": 99,
    "b": 174
  },
  "hsl": {
    "h": 220.541,
    "s": 46.835,
    "l": 46.471
  },
  "oklch": {
    "l": 0.51083,
    "c": 0.12619,
    "h": 263.3
  },
  "luminance": 0.13036
}

Semantic roles & 50–950 ramp

primary

#3F63AE

secondary

#C2AF87

accent

#AB51D6

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3F63AE

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

Preview Lab → · Contrast checker → · Palette generator →