#3F6FC8#3F6FC8

#3F6FC8 is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.4% C 0.148 H 261.5°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FC8
RGB	rgb(63, 111, 200)
HSL	hsl(219, 55%, 52%)
HSV	hsv(219, 69%, 78%)
CMYK	cmyk(68.5%, 44.5%, 0%, 21.6%)
CIE-LAB	lab(47.74, 13.20, -51.17)
CIE-LCH	lch(47.74, 52.85, 284.46°)
OKLab	oklab(55.38% -0.0218 -0.1463)
OKLCH	oklch(55.38% 0.148 261.5)
XYZ	xyz(18.1560, 16.5939, 56.8785)
Luminance	0.1660 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FC8 #C8983F

analogous

#3FB4C8 #3F6FC8 #543FC8

triadic

#3F6FC8 #C83F6F #6FC83F

tetradic

#3F6FC8 #C83FB4 #C8983F #3FC854

square

#3F6FC8 #C83FB4 #C8983F #3FC854

split-complementary

#3F6FC8 #C8543F #B4C83F

monochromatic

#1F3B6D #2D549D #3F6FC8 #6F93D6 #9EB6E3

Accessibility & contrast

On white

4.86

#3F6FC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3F6FC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FC8

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FC8	#FFFFFF	#000000	##FFFFFF
##3F6FC8	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4378CB

Deuteranopia (green-blind)

#2A6BC6

Tritanopia (blue-blind)

#008492

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6fc8;
/* rgb */ color: rgb(63, 111, 200);
/* oklch */ color: oklch(55.4% 0.148 261.5);

Tailwind

colors: {
  custom: {
    50: '#8397d9',
    500: '#3f6fc8',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fc8;
$custom-light: #8397d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fc8",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 200
  },
  "hsl": {
    "h": 218.978,
    "s": 55.466,
    "l": 51.569
  },
  "oklch": {
    "l": 0.55378,
    "c": 0.14795,
    "h": 261.5
  },
  "luminance": 0.16596
}

Semantic roles & 50–950 ramp

primary

#3F6FC8

secondary

#D0BA93

accent

#AA49DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6FC8

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

Preview Lab → · Contrast checker → · Palette generator →