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Colour

#566FA4

  • #566FA4
  • Blue
  • Dark
  • Nearest: Steel blue

#566FA4 is a blue with RGB values 86, 111, 164 and HSL 221°, 31%, 49%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#566FA4#566FA4
HEX#566FA4
RGBrgb(86, 111, 164)
RGB (0–1)0.3373, 0.4353, 0.6431
RGB percentages33.7%, 43.5%, 64.3%
HSLhsl(220.8, 31.2%, 49%)
HSV / HSBhsv(220.8, 47.6%, 64.3%)
CMYK47.6%, 32.3%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,664,676
CSS custom property--colour: #566FA4;

Brightness & contrast

Relative luminance0.16028WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.99:1
Contrast with white4.99:1WCAG normal text: AA
Contrast with black4.21:1WCAG normal text: Fail
Greyscale equivalent#6E6E6E
Inverted#A9905B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B73A6no red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#536CA3no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#377A82no blue cones; rare, and affects men and women equally; ΔE 31.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.99:1WCAG large text: AAA
Contrast with black, large text4.21:1WCAG large text: AA

Named colours

Steel blue · ΔE 11.3Slate grey · ΔE 23Light slate grey · ΔE 23.5Cornflower blue · ΔE 23.6Dark slateblue · ΔE 28.1Dim grey · ΔE 32
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.27, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A48B56
Analogous#5696A4, #6456A4
Triadic#A4566F, #6FA456
Split complementary#A46456, #96A456
Tetradic#A45696, #A48B56, #56A464

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAE0EC
Lighter +30%#B9C4DA
Lighter +20%#97A7C9
Lighter +10%#768BB7
Darker −10%#445883
Darker −20%#334261
Darker −30%#212B40
Darker −40%#10141E
More saturated +25%#3764C3
Less saturated −25%#757A85

Channel breakdown

R86
G111
B164
Red86 (33.7%)
Green111 (43.5%)
Blue164 (64.3%)
Hue220.77°
Saturation (HSL)31.2%
Lightness49.02%
Dominant channelBlue
Hex per channelR 56 · G 6F · B A4

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Every value on this page was computed from “566fa4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.