#3F69BB#3F69BB

#3F69BB is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.2% C 0.137 H 262.3°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F69BB
RGB	rgb(63, 105, 187)
HSL	hsl(220, 50%, 49%)
HSV	hsv(220, 66%, 73%)
CMYK	cmyk(66.3%, 43.9%, 0%, 26.7%)
CIE-LAB	lab(45.28, 12.31, -47.61)
CIE-LCH	lch(45.28, 49.17, 284.50°)
OKLab	oklab(53.23% -0.0184 -0.1359)
OKLCH	oklch(53.23% 0.137 262.3)
XYZ	xyz(16.0680, 14.7462, 49.0036)
Luminance	0.1475 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F69BB #BB913F

analogous

#3FA7BB #3F69BB #533FBB

triadic

#3F69BB #BB3F69 #69BB3F

tetradic

#3F69BB #BB3FA7 #BB913F #3FBB53

square

#3F69BB #BB3FA7 #BB913F #3FBB53

split-complementary

#3F69BB #BB533F #A7BB3F

monochromatic

#20365F #304F8D #3F69BB #6A8CCD #98AFDC

Accessibility & contrast

On white

5.32

#3F69BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#3F69BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F69BB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F69BB	#FFFFFF	#000000	##FFFFFF
##3F69BB	1.00	5.32	3.95	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4271BE

Deuteranopia (green-blind)

#2D66B9

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f69bb;
/* rgb */ color: rgb(63, 105, 187);
/* oklch */ color: oklch(53.2% 0.137 262.3);

Tailwind

colors: {
  custom: {
    50: '#8193d0',
    500: '#3f69bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f69bb;
$custom-light: #8193d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f69bb",
  "rgb": {
    "r": 63,
    "g": 105,
    "b": 187
  },
  "hsl": {
    "h": 219.677,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.53233,
    "c": 0.13718,
    "h": 262.3
  },
  "luminance": 0.14748
}

Semantic roles & 50–950 ramp

primary

#3F69BB

secondary

#C8B48E

accent

#AA4FD9

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F69BB

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

Preview Lab → · Contrast checker → · Palette generator →