#3F6BB7#3F6BB7

#3F6BB7 is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.4% C 0.129 H 260.6°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BB7
RGB	rgb(63, 107, 183)
HSL	hsl(218, 49%, 48%)
HSV	hsv(218, 66%, 72%)
CMYK	cmyk(65.6%, 41.5%, 0%, 28.2%)
CIE-LAB	lab(45.62, 9.62, -44.75)
CIE-LCH	lch(45.62, 45.77, 282.13°)
OKLab	oklab(53.42% -0.0211 -0.1275)
OKLCH	oklch(53.42% 0.129 260.6)
XYZ	xyz(15.8518, 14.9895, 46.8484)
Luminance	0.1499 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BB7 #B78B3F

analogous

#3FA7B7 #3F6BB7 #4F3FB7

triadic

#3F6BB7 #B73F6B #6BB73F

tetradic

#3F6BB7 #B73FA7 #B78B3F #3FB74F

square

#3F6BB7 #B73FA7 #B78B3F #3FB74F

split-complementary

#3F6BB7 #B74F3F #A7B73F

monochromatic

#20365C #2F5089 #3F6BB7 #688CCB #96AFDB

Accessibility & contrast

On white

5.25

#3F6BB7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#3F6BB7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BB7

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BB7	#FFFFFF	#000000	##FFFFFF
##3F6BB7	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4872BA

Deuteranopia (green-blind)

#3667B5

Tritanopia (blue-blind)

#007C88

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3f6bb7;
/* rgb */ color: rgb(63, 107, 183);
/* oklch */ color: oklch(53.4% 0.129 260.6);

Tailwind

colors: {
  custom: {
    50: '#8094cd',
    500: '#3f6bb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bb7;
$custom-light: #8094cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bb7",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 183
  },
  "hsl": {
    "h": 218,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.53417,
    "c": 0.12927,
    "h": 260.6
  },
  "luminance": 0.14991
}

Semantic roles & 50–950 ramp

primary

#3F6BB7

secondary

#C6B18B

accent

#A64FD8

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3F6BB7

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

Preview Lab → · Contrast checker → · Palette generator →