#3F6FC7#3F6FC7

#3F6FC7 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.3% C 0.147 H 261.4°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FC7
RGB	rgb(63, 111, 199)
HSL	hsl(219, 55%, 51%)
HSV	hsv(219, 68%, 78%)
CMYK	cmyk(68.3%, 44.2%, 0%, 22%)
CIE-LAB	lab(47.68, 12.84, -50.69)
CIE-LCH	lch(47.68, 52.29, 284.21°)
OKLab	oklab(55.31% -0.0219 -0.1449)
OKLCH	oklch(55.31% 0.147 261.4)
XYZ	xyz(18.0395, 16.5473, 56.2650)
Luminance	0.1655 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FC7 #C7973F

analogous

#3FB3C7 #3F6FC7 #533FC7

triadic

#3F6FC7 #C73F6F #6FC73F

tetradic

#3F6FC7 #C73FB3 #C7973F #3FC753

square

#3F6FC7 #C73FB3 #C7973F #3FC753

split-complementary

#3F6FC7 #C7533F #B3C73F

monochromatic

#203B6C #2D549B #3F6FC7 #6E93D5 #9EB6E3

Accessibility & contrast

On white

4.87

#3F6FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3F6FC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FC7

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FC7	#FFFFFF	#000000	##FFFFFF
##3F6FC7	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4478CA

Deuteranopia (green-blind)

#2C6BC5

Tritanopia (blue-blind)

#008391

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6fc7;
/* rgb */ color: rgb(63, 111, 199);
/* oklch */ color: oklch(55.3% 0.147 261.4);

Tailwind

colors: {
  custom: {
    50: '#8397d8',
    500: '#3f6fc7',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fc7;
$custom-light: #8397d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fc7",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 199
  },
  "hsl": {
    "h": 218.824,
    "s": 54.839,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55313,
    "c": 0.14658,
    "h": 261.4
  },
  "luminance": 0.16549
}

Semantic roles & 50–950 ramp

primary

#3F6FC7

secondary

#CFBA93

accent

#AA4ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #3F6FC7

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

Preview Lab → · Contrast checker → · Palette generator →