#3F56A8#3F56A8

#3F56A8 is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.9% C 0.134 H 269.1°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F56A8
RGB	rgb(63, 86, 168)
HSL	hsl(227, 45%, 45%)
HSV	hsv(227, 63%, 66%)
CMYK	cmyk(62.5%, 48.8%, 0%, 34.1%)
CIE-LAB	lab(38.79, 17.71, -46.86)
CIE-LCH	lch(38.79, 50.09, 290.71°)
OKLab	oklab(47.88% -0.0021 -0.134)
OKLCH	oklch(47.88% 0.134 269.1)
XYZ	xyz(12.4432, 10.5384, 38.4166)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F56A8 #A8913F

analogous

#3F8BA8 #3F56A8 #5C3FA8

triadic

#3F56A8 #A83F56 #56A83F

tetradic

#3F56A8 #A83F8B #A8913F #3FA85C

square

#3F56A8 #A83F8B #A8913F #3FA85C

split-complementary

#3F56A8 #A85C3F #8BA83F

monochromatic

#1E284F #2E3F7B #3F56A8 #6176C4 #8D9DD4

Accessibility & contrast

On white

6.76

#3F56A8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3F56A8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F56A8

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F56A8	#FFFFFF	#000000	##FFFFFF
##3F56A8	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C60AB

Deuteranopia (green-blind)

#1857A6

Tritanopia (blue-blind)

#006977

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3f56a8;
/* rgb */ color: rgb(63, 86, 168);
/* oklch */ color: oklch(47.9% 0.134 269.1);

Tailwind

colors: {
  custom: {
    50: '#7e85c2',
    500: '#3f56a8',
    950: '#000000',
  },
}

SCSS

$custom: #3f56a8;
$custom-light: #7e85c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f56a8",
  "rgb": {
    "r": 63,
    "g": 86,
    "b": 168
  },
  "hsl": {
    "h": 226.857,
    "s": 45.455,
    "l": 45.294
  },
  "oklch": {
    "l": 0.47882,
    "c": 0.13404,
    "h": 269.1
  },
  "luminance": 0.10539
}

Semantic roles & 50–950 ramp

primary

#3F56A8

secondary

#BFB284

accent

#B953D5

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0B0B12

muted

#7C7C81

Preview Lab

Preview with #3F56A8

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

Preview Lab → · Contrast checker → · Palette generator →