#3F6ED9#3F6ED9

#3F6ED9 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.3% C 0.172 H 263.9°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ED9
RGB	rgb(63, 110, 217)
HSL	hsl(222, 67%, 55%)
HSV	hsv(222, 71%, 85%)
CMYK	cmyk(71%, 49.3%, 0%, 14.9%)
CIE-LAB	lab(48.53, 19.96, -59.60)
CIE-LCH	lch(48.53, 62.86, 288.52°)
OKLab	oklab(56.32% -0.0183 -0.1712)
OKLCH	oklch(56.32% 0.172 263.9)
XYZ	xyz(20.1458, 17.2163, 67.8935)
Luminance	0.1722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ED9 #D9AA3F

analogous

#3FBBD9 #3F6ED9 #5D3FD9

triadic

#3F6ED9 #D93F6E #6ED93F

tetradic

#3F6ED9 #D93FBB #D9AA3F #3FD95D

square

#3F6ED9 #D93FBB #D9AA3F #3FD95D

split-complementary

#3F6ED9 #D95D3F #BBD93F

monochromatic

#1A3A84 #2451B7 #3F6ED9 #7295E3 #A5BBED

Accessibility & contrast

On white

4.73

#3F6ED9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3F6ED9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED9

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ED9	#FFFFFF	#000000	##FFFFFF
##3F6ED9	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)

#307BDD

Deuteranopia (green-blind)

#006DD7

Tritanopia (blue-blind)

#008799

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f6ed9;
/* rgb */ color: rgb(63, 110, 217);
/* oklch */ color: oklch(56.3% 0.172 263.9);

Tailwind

colors: {
  custom: {
    50: '#8697e5',
    500: '#3f6ed9',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ed9;
$custom-light: #8697e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ed9",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 217
  },
  "hsl": {
    "h": 221.688,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.56322,
    "c": 0.17214,
    "h": 263.9
  },
  "luminance": 0.17218
}

Semantic roles & 50–950 ramp

primary

#3F6ED9

secondary

#DAC79A

accent

#B53EEA

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0D16

muted

#7E7E84

Preview Lab

Preview with #3F6ED9

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

Preview Lab → · Contrast checker → · Palette generator →