#3F6FD4#3F6FD4

#3F6FD4 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.2% C 0.164 H 263.1°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FD4
RGB	rgb(63, 111, 212)
HSL	hsl(221, 63%, 54%)
HSV	hsv(221, 70%, 83%)
CMYK	cmyk(70.3%, 47.6%, 0%, 16.9%)
CIE-LAB	lab(48.48, 17.53, -56.84)
CIE-LCH	lch(48.48, 59.48, 287.14°)
OKLab	oklab(56.18% -0.0198 -0.163)
OKLCH	oklch(56.18% 0.164 263.1)
XYZ	xyz(19.6138, 17.1771, 64.5564)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FD4 #D4A43F

analogous

#3FBAD4 #3F6FD4 #5A3FD4

triadic

#3F6FD4 #D43F6F #6FD43F

tetradic

#3F6FD4 #D43FBA #D4A43F #3FD45A

square

#3F6FD4 #D43FBA #D4A43F #3FD45A

split-complementary

#3F6FD4 #D45A3F #BAD43F

monochromatic

#1C3B7D #2753AF #3F6FD4 #7195DF #A3BAEA

Accessibility & contrast

On white

4.73

#3F6FD4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3F6FD4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FD4

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FD4	#FFFFFF	#000000	##FFFFFF
##3F6FD4	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#387AD8

Deuteranopia (green-blind)

#106DD2

Tritanopia (blue-blind)

#008797

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f6fd4;
/* rgb */ color: rgb(63, 111, 212);
/* oklch */ color: oklch(56.2% 0.164 263.1);

Tailwind

colors: {
  custom: {
    50: '#8597e2',
    500: '#3f6fd4',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fd4;
$custom-light: #8597e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fd4",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 212
  },
  "hsl": {
    "h": 220.671,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.56182,
    "c": 0.16422,
    "h": 263.1
  },
  "luminance": 0.17179
}

Semantic roles & 50–950 ramp

primary

#3F6FD4

secondary

#D7C398

accent

#B141E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6FD4

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

Preview Lab → · Contrast checker → · Palette generator →