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Recognised as Colour

#566EA1

  • #566EA1
  • Blue
  • Dark
  • Nearest: Steel blue

#566EA1 is a blue with RGB values 86, 110, 161 and HSL 221°, 30%, 48%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#566EA1#566EA1
HEX#566EA1
RGBrgb(86, 110, 161)
RGB (0–1)0.3373, 0.4314, 0.6314
RGB percentages33.7%, 43.1%, 63.1%
HSLhsl(220.8, 30.4%, 48.4%)
HSV / HSBhsv(220.8, 46.6%, 63.1%)
CMYK46.6%, 31.7%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,664,417
CSS custom property--colour: #566EA1;

Brightness & contrast

Relative luminance0.15704WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.07:1
Contrast with white5.07:1WCAG normal text: AA
Contrast with black4.14:1WCAG normal text: Fail
Greyscale equivalent#6D6D6D
Inverted#A9915E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5B72A3no red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#536BA0no green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#397980no blue cones; rare, and affects men and women equally; ΔE 31.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.07:1WCAG large text: AAA
Contrast with black, large text4.14:1WCAG large text: AA

Named colours

Steel blue · ΔE 11.3Slate grey · ΔE 22Light slate grey · ΔE 22.7Cornflower blue · ΔE 24.7Dark slateblue · ΔE 28.5Dim grey · ΔE 30.8
Nearest named CSS colourSteel blue (#4682B4)ΔE 11.34, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A18956
Analogous#5694A1, #6356A1
Triadic#A1566E, #6EA156
Split complementary#A16356, #94A156
Tetradic#A15694, #A18956, #56A163

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9DEEA
Lighter +30%#B7C2D9
Lighter +20%#96A6C7
Lighter +10%#7589B5
Darker −10%#445780
Darker −20%#32415F
Darker −30%#212A3D
Darker −40%#0F131C
More saturated +25%#3763C0
Less saturated −25%#757982

Channel breakdown

R86
G110
B161
Red86 (33.7%)
Green110 (43.1%)
Blue161 (63.1%)
Hue220.8°
Saturation (HSL)30.36%
Lightness48.43%
Dominant channelBlue
Hex per channelR 56 · G 6E · B A1

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Every value on this page was computed from “566ea1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.