#3F56AB#3F56AB

#3F56AB is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.138 H 269.3°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F56AB
RGB	rgb(63, 86, 171)
HSL	hsl(227, 46%, 46%)
HSV	hsv(227, 63%, 67%)
CMYK	cmyk(63.2%, 49.7%, 0%, 32.9%)
CIE-LAB	lab(38.99, 18.78, -48.32)
CIE-LCH	lch(38.99, 51.84, 291.24°)
OKLab	oklab(48.09% -0.0018 -0.1383)
OKLCH	oklch(48.09% 0.138 269.3)
XYZ	xyz(12.7259, 10.6515, 39.9055)
Luminance	0.1065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F56AB #AB943F

analogous

#3F8CAB #3F56AB #5E3FAB

triadic

#3F56AB #AB3F56 #56AB3F

tetradic

#3F56AB #AB3F8C #AB943F #3FAB5E

square

#3F56AB #AB3F8C #AB943F #3FAB5E

split-complementary

#3F56AB #AB5E3F #8CAB3F

monochromatic

#1E2952 #2F407E #3F56AB #6277C5 #8F9ED6

Accessibility & contrast

On white

6.71

#3F56AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F56AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F56AB

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F56AB	#FFFFFF	#000000	##FFFFFF
##3F56AB	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2961AE

Deuteranopia (green-blind)

#1157A9

Tritanopia (blue-blind)

#006A78

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f56ab;
/* rgb */ color: rgb(63, 86, 171);
/* oklch */ color: oklch(48.1% 0.138 269.3);

Tailwind

colors: {
  custom: {
    50: '#7f85c4',
    500: '#3f56ab',
    950: '#000000',
  },
}

SCSS

$custom: #3f56ab;
$custom-light: #7f85c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f56ab",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 171
  },
  "hsl": {
    "h": 227.222,
    "s": 46.154,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48093,
    "c": 0.13834,
    "h": 269.3
  },
  "luminance": 0.10653
}

Semantic roles & 50–950 ramp

primary

#3F56AB

secondary

#C1B485

accent

#BA52D6

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3F56AB

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

Preview Lab → · Contrast checker → · Palette generator →