#3F6BCC#3F6BCC

#3F6BCC is a mid, vivid blue. Relative luminance 0.159; OKLCH L 54.8% C 0.158 H 263.7°. Best body text is #FFFFFF at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F6BCC
RGB	rgb(63, 107, 204)
HSL	hsl(221, 58%, 52%)
HSV	hsv(221, 69%, 80%)
CMYK	cmyk(69.1%, 47.5%, 0%, 20%)
CIE-LAB	lab(46.88, 17.16, -54.85)
CIE-LCH	lch(46.88, 57.47, 287.37°)
OKLab	oklab(54.8% -0.0174 -0.1572)
OKLCH	oklch(54.8% 0.158 263.7)
XYZ	xyz(18.2028, 15.9299, 59.2305)
Luminance	0.1593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F6BCC #CCA03F

analogous

#3FB1CC #3F6BCC #5A3FCC

triadic

#3F6BCC #CC3F6B #6BCC3F

tetradic

#3F6BCC #CC3FB1 #CCA03F #3FCC5A

square

#3F6BCC #CC3FB1 #CCA03F #3FCC5A

split-complementary

#3F6BCC #CC5A3F #B1CC3F

monochromatic

#1E3972 #2B50A3 #3F6BCC #6F90D9 #A0B6E6

Accessibility & contrast

On white

5.02

#3F6BCC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.19

#3F6BCC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F6BCC

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F6BCC	#FFFFFF	#000000	##FFFFFF
##3F6BCC	1.00	5.02	4.19	5.02
#FFFFFF	5.02	1.00	21.00	1.00
#000000	4.19	21.00	1.00	21.00
##FFFFFF	5.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3776D0

Deuteranopia (green-blind)

#1469CA

Tritanopia (blue-blind)

#008292

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3f6bcc;
/* rgb */ color: rgb(63, 107, 204);
/* oklch */ color: oklch(54.8% 0.158 263.7);

Tailwind

colors: {
  custom: {
    50: '#8494dc',
    500: '#3f6bcc',
    950: '#000000',
  },
}

SCSS

$custom: #3f6bcc;
$custom-light: #8494dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f6bcc",
  "rgb": {
    "r": 63,
    "g": 107,
    "b": 204
  },
  "hsl": {
    "h": 221.277,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.54796,
    "c": 0.15818,
    "h": 263.7
  },
  "luminance": 0.15932
}

Semantic roles & 50–950 ramp

primary

#3F6BCC

secondary

#D2BF95

accent

#B147E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F6BCC

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

Preview Lab → · Contrast checker → · Palette generator →