#3F6BBF#3F6BBF

#3F6BBF is a mid, vivid blue. Relative luminance 0.153; OKLCH L 53.9% C 0.140 H 262.0°. Best body text is #FFFFFF at 5.16:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BBF
RGB	rgb(63, 107, 191)
HSL	hsl(219, 50%, 50%)
HSV	hsv(219, 67%, 75%)
CMYK	cmyk(67%, 44%, 0%, 25.1%)
CIE-LAB	lab(46.09, 12.48, -48.64)
CIE-LCH	lch(46.09, 50.22, 284.39°)
OKLab	oklab(53.93% -0.0196 -0.139)
OKLCH	oklch(53.93% 0.14 262)
XYZ	xyz(16.7082, 15.3321, 51.3590)
Luminance	0.1533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BBF #BF933F

analogous

#3FABBF #3F6BBF #533FBF

triadic

#3F6BBF #BF3F6B #6BBF3F

tetradic

#3F6BBF #BF3FAB #BF933F #3FBF53

square

#3F6BBF #BF3FAB #BF933F #3FBF53

split-complementary

#3F6BBF #BF533F #ABBF3F

monochromatic

#213763 #305191 #3F6BBF #6D8ECF #9BB2DE

Accessibility & contrast

On white

5.16

#3F6BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.07

#3F6BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BBF

5.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BBF	#FFFFFF	#000000	##FFFFFF
##3F6BBF	1.00	5.16	4.07	5.16
#FFFFFF	5.16	1.00	21.00	1.00
#000000	4.07	21.00	1.00	21.00
##FFFFFF	5.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4373C2

Deuteranopia (green-blind)

#2D68BD

Tritanopia (blue-blind)

#007E8C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f6bbf;
/* rgb */ color: rgb(63, 107, 191);
/* oklch */ color: oklch(53.9% 0.140 262.0);

Tailwind

colors: {
  custom: {
    50: '#8294d3',
    500: '#3f6bbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bbf;
$custom-light: #8294d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bbf",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 191
  },
  "hsl": {
    "h": 219.375,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.53927,
    "c": 0.14034,
    "h": 262
  },
  "luminance": 0.15334
}

Semantic roles & 50–950 ramp

primary

#3F6BBF

secondary

#CAB690

accent

#AA4EDA

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #3F6BBF

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

Preview Lab → · Contrast checker → · Palette generator →