#3F6DBB#3F6DBB

#3F6DBB is a mid, vivid blue. Relative luminance 0.156; OKLCH L 54.1% C 0.132 H 260.3°. Best body text is #FFFFFF at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DBB
RGB	rgb(63, 109, 187)
HSL	hsl(218, 50%, 49%)
HSV	hsv(218, 66%, 73%)
CMYK	cmyk(66.3%, 41.7%, 0%, 26.7%)
CIE-LAB	lab(46.42, 9.79, -45.79)
CIE-LCH	lch(46.42, 46.83, 282.07°)
OKLab	oklab(54.11% -0.0223 -0.1306)
OKLCH	oklch(54.11% 0.132 260.3)
XYZ	xyz(16.4850, 15.5803, 49.1426)
Luminance	0.1558 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DBB #BB8D3F

analogous

#3FABBB #3F6DBB #4F3FBB

triadic

#3F6DBB #BB3F6D #6DBB3F

tetradic

#3F6DBB #BB3FAB #BB8D3F #3FBB4F

square

#3F6DBB #BB3FAB #BB8D3F #3FBB4F

split-complementary

#3F6DBB #BB4F3F #ABBB3F

monochromatic

#20385F #30528D #3F6DBB #6A8FCD #98B1DC

Accessibility & contrast

On white

5.10

#3F6DBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.12

#3F6DBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DBB

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DBB	#FFFFFF	#000000	##FFFFFF
##3F6DBB	1.00	5.10	4.12	5.10
#FFFFFF	5.10	1.00	21.00	1.00
#000000	4.12	21.00	1.00	21.00
##FFFFFF	5.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4974BE

Deuteranopia (green-blind)

#3669B9

Tritanopia (blue-blind)

#007F8B

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3f6dbb;
/* rgb */ color: rgb(63, 109, 187);
/* oklch */ color: oklch(54.1% 0.132 260.3);

Tailwind

colors: {
  custom: {
    50: '#8196d0',
    500: '#3f6dbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dbb;
$custom-light: #8196d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dbb",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 187
  },
  "hsl": {
    "h": 217.742,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54109,
    "c": 0.13247,
    "h": 260.3
  },
  "luminance": 0.15582
}

Semantic roles & 50–950 ramp

primary

#3F6DBB

secondary

#C8B28E

accent

#A64FD9

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6DBB

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

Preview Lab → · Contrast checker → · Palette generator →