#3F6BBB#3F6BBB

#3F6BBB is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.7% C 0.135 H 261.3°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BBB
RGB	rgb(63, 107, 187)
HSL	hsl(219, 50%, 49%)
HSV	hsv(219, 66%, 73%)
CMYK	cmyk(66.3%, 42.8%, 0%, 26.7%)
CIE-LAB	lab(45.85, 11.05, -46.70)
CIE-LCH	lch(45.85, 47.99, 283.31°)
OKLab	oklab(53.67% -0.0203 -0.1333)
OKLCH	oklch(53.67% 0.135 261.3)
XYZ	xyz(16.2741, 15.1584, 49.0723)
Luminance	0.1516 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BBB #BB8F3F

analogous

#3FA9BB #3F6BBB #513FBB

triadic

#3F6BBB #BB3F6B #6BBB3F

tetradic

#3F6BBB #BB3FA9 #BB8F3F #3FBB51

square

#3F6BBB #BB3FA9 #BB8F3F #3FBB51

split-complementary

#3F6BBB #BB513F #A9BB3F

monochromatic

#20375F #30518D #3F6BBB #6A8DCD #98B0DC

Accessibility & contrast

On white

5.21

#3F6BBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#3F6BBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BBB

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BBB	#FFFFFF	#000000	##FFFFFF
##3F6BBB	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4673BE

Deuteranopia (green-blind)

#3267B9

Tritanopia (blue-blind)

#007D8A

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3f6bbb;
/* rgb */ color: rgb(63, 107, 187);
/* oklch */ color: oklch(53.7% 0.135 261.3);

Tailwind

colors: {
  custom: {
    50: '#8194d0',
    500: '#3f6bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bbb;
$custom-light: #8194d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bbb",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 187
  },
  "hsl": {
    "h": 218.71,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.5367,
    "c": 0.13481,
    "h": 261.3
  },
  "luminance": 0.1516
}

Semantic roles & 50–950 ramp

primary

#3F6BBB

secondary

#C8B38E

accent

#A84FD9

background

#F8F9FC

surface

#F0F1F9

border

#CBCBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3F6BBB

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

Preview Lab → · Contrast checker → · Palette generator →