#3566AB#3566AB

#3566AB is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.1% C 0.122 H 257.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3566AB
RGB	rgb(53, 102, 171)
HSL	hsl(215, 53%, 44%)
HSV	hsv(215, 69%, 67%)
CMYK	cmyk(69%, 40.4%, 0%, 32.9%)
CIE-LAB	lab(43.06, 6.74, -41.83)
CIE-LCH	lch(43.06, 42.37, 279.15°)
OKLab	oklab(51.09% -0.0268 -0.1192)
OKLCH	oklch(51.09% 0.122 257.3)
XYZ	xyz(13.5676, 13.1985, 40.3527)
Luminance	0.1320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3566AB #AB7A35

analogous

#35A1AB #3566AB #3F35AB

triadic

#3566AB #AB3566 #66AB35

tetradic

#3566AB #AB35A1 #AB7A35 #35AB3F

square

#3566AB #AB35A1 #AB7A35 #35AB3F

split-complementary

#3566AB #AB3F35 #A1AB35

monochromatic

#182E4E #274A7C #3566AB #5385CA #82A6D8

Accessibility & contrast

On white

5.77

#3566AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3566AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3566AB

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3566AB	#FFFFFF	#000000	##FFFFFF
##3566AB	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#466CAE

Deuteranopia (green-blind)

#3461AA

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3566ab;
/* rgb */ color: rgb(53, 102, 171);
/* oklch */ color: oklch(51.1% 0.122 257.3);

Tailwind

colors: {
  custom: {
    50: '#7a91c4',
    500: '#3566ab',
    950: '#000000',
  },
}

SCSS

$custom: #3566ab;
$custom-light: #7a91c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3566ab",
  "rgb": {
    "r": 53,
    "g": 102,
    "b": 171
  },
  "hsl": {
    "h": 215.085,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51093,
    "c": 0.12219,
    "h": 257.3
  },
  "luminance": 0.132
}

Semantic roles & 50–950 ramp

primary

#3566AB

secondary

#C2A47A

accent

#A04CDC

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3566AB

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

Preview Lab → · Contrast checker → · Palette generator →