#566ECF#566ECF

#566ECF is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.8% C 0.151 H 270.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#566ECF
RGB	rgb(86, 110, 207)
HSL	hsl(228, 56%, 57%)
HSV	hsv(228, 58%, 81%)
CMYK	cmyk(58.5%, 46.9%, 0%, 18.8%)
CIE-LAB	lab(49.05, 20.31, -53.02)
CIE-LCH	lch(49.05, 56.78, 290.96°)
OKLab	oklab(56.83% 0.0013 -0.1514)
OKLCH	oklch(56.83% 0.151 270.5)
XYZ	xyz(20.6724, 17.6337, 61.3336)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#566ECF #CFB756

analogous

#56ABCF #566ECF #7A56CF

triadic

#566ECF #CF566E #6ECF56

tetradic

#566ECF #CF56AB #CFB756 #56CF7A

square

#566ECF #CF56AB #CFB756 #56CF7A

split-complementary

#566ECF #CF7A56 #ABCF56

monochromatic

#263985 #334DB5 #566ECF #8697DD #B5C0EA

Accessibility & contrast

On white

4.64

#566ECF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#566ECF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #566ECF

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##566ECF	#FFFFFF	#000000	##FFFFFF
##566ECF	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7AD3

Deuteranopia (green-blind)

#2D70CD

Tritanopia (blue-blind)

#008494

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #566ecf;
/* rgb */ color: rgb(86, 110, 207);
/* oklch */ color: oklch(56.8% 0.151 270.5);

Tailwind

colors: {
  custom: {
    50: '#8f97de',
    500: '#566ecf',
    950: '#000000',
  },
}

SCSS

$custom: #566ecf;
$custom-light: #8f97de;
$custom-dark: #000000;

JSON

{
  "hex": "#566ecf",
  "rgb": {
    "r": 86,
    "g": 110,
    "b": 207
  },
  "hsl": {
    "h": 228.099,
    "s": 55.76,
    "l": 57.451
  },
  "oklch": {
    "l": 0.56825,
    "c": 0.15136,
    "h": 270.5
  },
  "luminance": 0.17635
}

Semantic roles & 50–950 ramp

primary

#566ECF

secondary

#D9CFA8

accent

#C149DF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0D15

muted

#7E7E83

Preview Lab

Preview with #566ECF

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

Preview Lab → · Contrast checker → · Palette generator →