#566BBF#566BBF

#566BBF is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.2% C 0.133 H 271.0°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#566BBF
RGB	rgb(86, 107, 191)
HSL	hsl(228, 45%, 54%)
HSV	hsv(228, 55%, 75%)
CMYK	cmyk(55%, 44%, 0%, 25.1%)
CIE-LAB	lab(47.31, 16.88, -46.62)
CIE-LCH	lch(47.31, 49.58, 289.90°)
OKLab	oklab(55.19% 0.0022 -0.1326)
OKLCH	oklch(55.19% 0.133 271)
XYZ	xyz(18.4963, 16.2541, 51.4428)
Luminance	0.1626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#566BBF #BFAA56

analogous

#56A0BF #566BBF #7656BF

triadic

#566BBF #BF566B #6BBF56

tetradic

#566BBF #BF56A0 #BFAA56 #56BF76

square

#566BBF #BF56A0 #BFAA56 #56BF76

split-complementary

#566BBF #BF7656 #A0BF56

monochromatic

#2A3870 #3B4F9D #566BBF #8292D0 #AFB9E1

Accessibility & contrast

On white

4.94

#566BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#566BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #566BBF

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##566BBF	#FFFFFF	#000000	##FFFFFF
##566BBF	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4775C2

Deuteranopia (green-blind)

#3A6CBD

Tritanopia (blue-blind)

#1D7D8C

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #566bbf;
/* rgb */ color: rgb(86, 107, 191);
/* oklch */ color: oklch(55.2% 0.133 271.0);

Tailwind

colors: {
  custom: {
    50: '#8d95d3',
    500: '#566bbf',
    950: '#000000',
  },
}

SCSS

$custom: #566bbf;
$custom-light: #8d95d3;
$custom-dark: #000000;

JSON

{
  "hex": "#566bbf",
  "rgb": {
    "r": 86,
    "g": 107,
    "b": 191
  },
  "hsl": {
    "h": 228,
    "s": 45.064,
    "l": 54.314
  },
  "oklch": {
    "l": 0.55191,
    "c": 0.13261,
    "h": 271
  },
  "luminance": 0.16255
}

Semantic roles & 50–950 ramp

primary

#566BBF

secondary

#CFC6A2

accent

#BB53D5

background

#F9F9FD

surface

#F1F1FA

border

#CBCBD3

text

#0D0D14

muted

#7E7E83

Preview Lab

Preview with #566BBF

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

Preview Lab → · Contrast checker → · Palette generator →