#3F6DD1#3F6DD1

#3F6DD1 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.6% C 0.163 H 263.5°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DD1
RGB	rgb(63, 109, 209)
HSL	hsl(221, 61%, 53%)
HSV	hsv(221, 70%, 82%)
CMYK	cmyk(69.9%, 47.8%, 0%, 18%)
CIE-LAB	lab(47.75, 17.70, -56.32)
CIE-LCH	lch(47.75, 59.03, 287.45°)
OKLab	oklab(55.56% -0.0185 -0.1615)
OKLCH	oklch(55.56% 0.163 263.5)
XYZ	xyz(19.0231, 16.5955, 62.5100)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DD1 #D1A33F

analogous

#3FB6D1 #3F6DD1 #5A3FD1

triadic

#3F6DD1 #D13F6D #6DD13F

tetradic

#3F6DD1 #D13FB6 #D1A33F #3FD15A

square

#3F6DD1 #D13FB6 #D1A33F #3FD15A

split-complementary

#3F6DD1 #D15A3F #B6D13F

monochromatic

#1D3A79 #2951AA #3F6DD1 #7093DD #A2B8E9

Accessibility & contrast

On white

4.86

#3F6DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3F6DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DD1

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DD1	#FFFFFF	#000000	##FFFFFF
##3F6DD1	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3778D5

Deuteranopia (green-blind)

#0E6BCF

Tritanopia (blue-blind)

#008495

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6dd1;
/* rgb */ color: rgb(63, 109, 209);
/* oklch */ color: oklch(55.6% 0.163 263.5);

Tailwind

colors: {
  custom: {
    50: '#8596e0',
    500: '#3f6dd1',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dd1;
$custom-light: #8596e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dd1",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 209
  },
  "hsl": {
    "h": 221.096,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.55558,
    "c": 0.16257,
    "h": 263.5
  },
  "luminance": 0.16597
}

Semantic roles & 50–950 ramp

primary

#3F6DD1

secondary

#D5C297

accent

#B243E4

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6DD1

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

Preview Lab → · Contrast checker → · Palette generator →