#3F6ED7#3F6ED7

#3F6ED7 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.2% C 0.169 H 263.7°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F6ED7
RGB	rgb(63, 110, 215)
HSL	hsl(221, 66%, 55%)
HSV	hsv(221, 71%, 84%)
CMYK	cmyk(70.7%, 48.8%, 0%, 15.7%)
CIE-LAB	lab(48.40, 19.24, -58.68)
CIE-LCH	lch(48.40, 61.75, 288.15°)
OKLab	oklab(56.18% -0.0186 -0.1684)
OKLCH	oklch(56.18% 0.169 263.7)
XYZ	xyz(19.8872, 17.1128, 66.5318)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6ED7 #D7A83F

analogous

#3FBAD7 #3F6ED7 #5C3FD7

triadic

#3F6ED7 #D73F6E #6ED73F

tetradic

#3F6ED7 #D73FBA #D7A83F #3FD75C

square

#3F6ED7 #D73FBA #D7A83F #3FD75C

split-complementary

#3F6ED7 #D75C3F #BAD73F

monochromatic

#1B3A81 #2551B3 #3F6ED7 #7294E2 #A4BBEC

Accessibility & contrast

On white

4.75

#3F6ED7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3F6ED7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6ED7

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6ED7	#FFFFFF	#000000	##FFFFFF
##3F6ED7	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#327ADB

Deuteranopia (green-blind)

#006CD5

Tritanopia (blue-blind)

#008798

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f6ed7;
/* rgb */ color: rgb(63, 110, 215);
/* oklch */ color: oklch(56.2% 0.169 263.7);

Tailwind

colors: {
  custom: {
    50: '#8697e4',
    500: '#3f6ed7',
    950: '#000000',
  },
}

SCSS

$custom: #3f6ed7;
$custom-light: #8697e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6ed7",
  "rgb": {
    "r": 63,
    "g": 110,
    "b": 215
  },
  "hsl": {
    "h": 221.447,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.56182,
    "c": 0.16946,
    "h": 263.7
  },
  "luminance": 0.17115
}

Semantic roles & 50–950 ramp

primary

#3F6ED7

secondary

#D9C599

accent

#B43FE8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0D16

muted

#7D7E84

Preview Lab

Preview with #3F6ED7

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

Preview Lab → · Contrast checker → · Palette generator →