#3F6DBE#3F6DBE

#3F6DBE is a mid, vivid blue. Relative luminance 0.157; OKLCH L 54.3% C 0.137 H 260.9°. Best body text is #FFFFFF at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DBE
RGB	rgb(63, 109, 190)
HSL	hsl(218, 50%, 50%)
HSV	hsv(218, 67%, 75%)
CMYK	cmyk(66.8%, 42.6%, 0%, 25.5%)
CIE-LAB	lab(46.59, 10.86, -47.25)
CIE-LCH	lch(46.59, 48.49, 282.95°)
OKLab	oklab(54.3% -0.0217 -0.1349)
OKLCH	oklch(54.3% 0.137 260.9)
XYZ	xyz(16.8095, 15.7101, 50.8517)
Luminance	0.1571 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DBE #BE903F

analogous

#3FADBE #3F6DBE #513FBE

triadic

#3F6DBE #BE3F6D #6DBE3F

tetradic

#3F6DBE #BE3FAD #BE903F #3FBE51

square

#3F6DBE #BE3FAD #BE903F #3FBE51

split-complementary

#3F6DBE #BE513F #ADBE3F

monochromatic

#213862 #305390 #3F6DBE #6C90CE #9AB2DD

Accessibility & contrast

On white

5.07

#3F6DBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.14

#3F6DBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DBE

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DBE	#FFFFFF	#000000	##FFFFFF
##3F6DBE	1.00	5.07	4.14	5.07
#FFFFFF	5.07	1.00	21.00	1.00
#000000	4.14	21.00	1.00	21.00
##FFFFFF	5.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4775C1

Deuteranopia (green-blind)

#3269BC

Tritanopia (blue-blind)

#00808C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f6dbe;
/* rgb */ color: rgb(63, 109, 190);
/* oklch */ color: oklch(54.3% 0.137 260.9);

Tailwind

colors: {
  custom: {
    50: '#8196d2',
    500: '#3f6dbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dbe;
$custom-light: #8196d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dbe",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 190
  },
  "hsl": {
    "h": 218.268,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54299,
    "c": 0.1366,
    "h": 260.9
  },
  "luminance": 0.15712
}

Semantic roles & 50–950 ramp

primary

#3F6DBE

secondary

#C9B48F

accent

#A74EDA

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6DBE

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

Preview Lab → · Contrast checker → · Palette generator →