#3F6FC3#3F6FC3

#3F6FC3 is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.1% C 0.141 H 260.8°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F6FC3
RGB	rgb(63, 111, 195)
HSL	hsl(218, 52%, 51%)
HSV	hsv(218, 68%, 76%)
CMYK	cmyk(67.7%, 43.1%, 0%, 23.5%)
CIE-LAB	lab(47.45, 11.40, -48.77)
CIE-LCH	lch(47.45, 50.09, 283.16°)
OKLab	oklab(55.05% -0.0227 -0.1393)
OKLCH	oklch(55.05% 0.141 260.8)
XYZ	xyz(17.5812, 16.3640, 53.8512)
Luminance	0.1637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6FC3 #C3933F

analogous

#3FB1C3 #3F6FC3 #513FC3

triadic

#3F6FC3 #C33F6F #6FC33F

tetradic

#3F6FC3 #C33FB1 #C3933F #3FC351

square

#3F6FC3 #C33FB1 #C3933F #3FC351

split-complementary

#3F6FC3 #C3513F #B1C33F

monochromatic

#203A67 #2F5496 #3F6FC3 #6E92D2 #9CB5E0

Accessibility & contrast

On white

4.91

#3F6FC3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#3F6FC3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6FC3

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6FC3	#FFFFFF	#000000	##FFFFFF
##3F6FC3	1.00	4.91	4.27	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4777C6

Deuteranopia (green-blind)

#316BC1

Tritanopia (blue-blind)

#00828F

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f6fc3;
/* rgb */ color: rgb(63, 111, 195);
/* oklch */ color: oklch(55.1% 0.141 260.8);

Tailwind

colors: {
  custom: {
    50: '#8297d6',
    500: '#3f6fc3',
    950: '#000000',
  },
}

SCSS

$custom: #3f6fc3;
$custom-light: #8297d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6fc3",
  "rgb": {
    "r": 63,
    "g": 111,
    "b": 195
  },
  "hsl": {
    "h": 218.182,
    "s": 52.381,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55054,
    "c": 0.14112,
    "h": 260.8
  },
  "luminance": 0.16366
}

Semantic roles & 50–950 ramp

primary

#3F6FC3

secondary

#CCB792

accent

#A84CDC

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #3F6FC3

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

Preview Lab → · Contrast checker → · Palette generator →