#3F6DD4#3F6DD4

#3F6DD4 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.8% C 0.167 H 263.8°. Best body text is #FFFFFF at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F6DD4
RGB	rgb(63, 109, 212)
HSL	hsl(221, 63%, 54%)
HSV	hsv(221, 70%, 83%)
CMYK	cmyk(70.3%, 48.6%, 0%, 16.9%)
CIE-LAB	lab(47.94, 18.79, -57.72)
CIE-LCH	lch(47.94, 60.70, 288.03°)
OKLab	oklab(55.77% -0.0181 -0.1656)
OKLCH	oklch(55.77% 0.167 263.8)
XYZ	xyz(19.3980, 16.7455, 64.4845)
Luminance	0.1675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6DD4 #D4A63F

analogous

#3FB7D4 #3F6DD4 #5C3FD4

triadic

#3F6DD4 #D43F6D #6DD43F

tetradic

#3F6DD4 #D43FB7 #D4A63F #3FD45C

square

#3F6DD4 #D43FB7 #D4A63F #3FD45C

split-complementary

#3F6DD4 #D45C3F #B7D43F

monochromatic

#1C3A7D #2751AF #3F6DD4 #7193DF #A3B9EA

Accessibility & contrast

On white

4.83

#3F6DD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3F6DD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6DD4

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6DD4	#FFFFFF	#000000	##FFFFFF
##3F6DD4	1.00	4.83	4.35	4.83
#FFFFFF	4.83	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3379D8

Deuteranopia (green-blind)

#006BD2

Tritanopia (blue-blind)

#008596

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3f6dd4;
/* rgb */ color: rgb(63, 109, 212);
/* oklch */ color: oklch(55.8% 0.167 263.8);

Tailwind

colors: {
  custom: {
    50: '#8696e2',
    500: '#3f6dd4',
    950: '#000000',
  },
}

SCSS

$custom: #3f6dd4;
$custom-light: #8696e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6dd4",
  "rgb": {
    "r": 63,
    "g": 109,
    "b": 212
  },
  "hsl": {
    "h": 221.477,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.55766,
    "c": 0.16662,
    "h": 263.8
  },
  "luminance": 0.16748
}

Semantic roles & 50–950 ramp

primary

#3F6DD4

secondary

#D7C498

accent

#B341E6

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6DD4

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

Preview Lab → · Contrast checker → · Palette generator →