#3F56BC#3F56BC

#3F56BC is a mid, vivid blue. Relative luminance 0.113; OKLCH L 49.3% C 0.162 H 269.9°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3F56BC
RGB	rgb(63, 86, 188)
HSL	hsl(229, 50%, 49%)
HSV	hsv(229, 66%, 74%)
CMYK	cmyk(66.5%, 54.3%, 0%, 26.3%)
CIE-LAB	lab(40.15, 24.84, -56.45)
CIE-LCH	lch(40.15, 61.67, 293.75°)
OKLab	oklab(49.34% -0.0003 -0.1622)
OKLCH	oklch(49.34% 0.162 269.9)
XYZ	xyz(14.4517, 11.3418, 48.9948)
Luminance	0.1134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F56BC #BCA53F

analogous

#3F95BC #3F56BC #673FBC

triadic

#3F56BC #BC3F56 #56BC3F

tetradic

#3F56BC #BC3F95 #BCA53F #3FBC67

square

#3F56BC #BC3F95 #BCA53F #3FBC67

split-complementary

#3F56BC #BC673F #95BC3F

monochromatic

#202C60 #30418E #3F56BC #6B7DCD #99A5DD

Accessibility & contrast

On white

6.42

#3F56BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3F56BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F56BC

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F56BC	#FFFFFF	#000000	##FFFFFF
##3F56BC	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0864C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#006E80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3f56bc;
/* rgb */ color: rgb(63, 86, 188);
/* oklch */ color: oklch(49.3% 0.162 269.9);

Tailwind

colors: {
  custom: {
    50: '#8285d1',
    500: '#3f56bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f56bc;
$custom-light: #8285d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f56bc",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 188
  },
  "hsl": {
    "h": 228.96,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.49343,
    "c": 0.16224,
    "h": 269.9
  },
  "luminance": 0.11343
}

Semantic roles & 50–950 ramp

primary

#3F56BC

secondary

#C9BE8E

accent

#C04ED9

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #3F56BC

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

Preview Lab → · Contrast checker → · Palette generator →