#3F6CBE#3F6CBE

#3F6CBE is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.1% C 0.138 H 261.3°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3F6CBE
RGB	rgb(63, 108, 190)
HSL	hsl(219, 50%, 50%)
HSV	hsv(219, 67%, 75%)
CMYK	cmyk(66.8%, 43.2%, 0%, 25.5%)
CIE-LAB	lab(46.31, 11.49, -47.71)
CIE-LCH	lch(46.31, 49.07, 283.54°)
OKLab	oklab(54.08% -0.0207 -0.1362)
OKLCH	oklch(54.08% 0.138 261.3)
XYZ	xyz(16.7034, 15.4979, 50.8163)
Luminance	0.1550 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6CBE #BE913F

analogous

#3FACBE #3F6CBE #513FBE

triadic

#3F6CBE #BE3F6C #6CBE3F

tetradic

#3F6CBE #BE3FAC #BE913F #3FBE51

square

#3F6CBE #BE3FAC #BE913F #3FBE51

split-complementary

#3F6CBE #BE513F #ACBE3F

monochromatic

#213862 #305290 #3F6CBE #6C8FCE #9AB2DD

Accessibility & contrast

On white

5.12

#3F6CBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#3F6CBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6CBE

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6CBE	#FFFFFF	#000000	##FFFFFF
##3F6CBE	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4574C1

Deuteranopia (green-blind)

#3068BC

Tritanopia (blue-blind)

#007F8C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f6cbe;
/* rgb */ color: rgb(63, 108, 190);
/* oklch */ color: oklch(54.1% 0.138 261.3);

Tailwind

colors: {
  custom: {
    50: '#8195d2',
    500: '#3f6cbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f6cbe;
$custom-light: #8195d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6cbe",
  "rgb": {
    "r": 63,
    "g": 108,
    "b": 190
  },
  "hsl": {
    "h": 218.74,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.5408,
    "c": 0.13778,
    "h": 261.3
  },
  "luminance": 0.155
}

Semantic roles & 50–950 ramp

primary

#3F6CBE

secondary

#C9B58F

accent

#A84EDA

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6CBE

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

Preview Lab → · Contrast checker → · Palette generator →