#3F6FBA#3F6FBA

#3F6FBA is a mid, vivid blue. Relative luminance 0.160; OKLCH L 54.5% C 0.129 H 259.0°. Best body text is #FFFFFF at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FBA
RGB	rgb(63, 111, 186)
HSL	hsl(217, 49%, 49%)
HSV	hsv(217, 66%, 73%)
CMYK	cmyk(66.1%, 40.3%, 0%, 27.1%)
CIE-LAB	lab(46.93, 8.19, -44.39)
CIE-LCH	lch(46.93, 45.14, 280.45°)
OKLab	oklab(54.49% -0.0245 -0.1264)
OKLCH	oklch(54.49% 0.129 259)
XYZ	xyz(16.5941, 15.9692, 48.6527)
Luminance	0.1597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FBA #BA8A3F

analogous

#3FADBA #3F6FBA #4C3FBA

triadic

#3F6FBA #BA3F6F #6FBA3F

tetradic

#3F6FBA #BA3FAD #BA8A3F #3FBA4C

square

#3F6FBA #BA3FAD #BA8A3F #3FBA4C

split-complementary

#3F6FBA #BA4C3F #ADBA3F

monochromatic

#20385F #30548C #3F6FBA #6A90CC #97B2DC

Accessibility & contrast

On white

5.01

#3F6FBA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3F6FBA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FBA

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FBA	#FFFFFF	#000000	##FFFFFF
##3F6FBA	1.00	5.01	4.19	5.01
#FFFFFF	5.01	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D75BD

Deuteranopia (green-blind)

#3B6AB8

Tritanopia (blue-blind)

#00808B

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f6fba;
/* rgb */ color: rgb(63, 111, 186);
/* oklch */ color: oklch(54.5% 0.129 259.0);

Tailwind

colors: {
  custom: {
    50: '#8197cf',
    500: '#3f6fba',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fba;
$custom-light: #8197cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fba",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 186
  },
  "hsl": {
    "h": 216.585,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.5449,
    "c": 0.1288,
    "h": 259
  },
  "luminance": 0.15971
}

Semantic roles & 50–950 ramp

primary

#3F6FBA

secondary

#C8B18D

accent

#A34FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6FBA

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

Preview Lab → · Contrast checker → · Palette generator →