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Recognised as Colour

#565A66

  • #565A66
  • Blue
  • Dark
  • Nearest: Dim grey

#565A66 is a blue with RGB values 86, 90, 102 and HSL 225°, 9%, 37%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#565A66#565A66
HEX#565A66
RGBrgb(86, 90, 102)
RGB (0–1)0.3373, 0.3529, 0.4
RGB percentages33.7%, 35.3%, 40%
HSLhsl(225, 8.5%, 36.9%)
HSV / HSBhsv(225, 15.7%, 40%)
CMYK15.7%, 11.8%, 0%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,659,238
CSS custom property--colour: #565A66;

Brightness & contrast

Relative luminance0.1025WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.89:1
Contrast with white6.89:1WCAG normal text: AA
Contrast with black3.05:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#A9A599

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#575B67no red cones; affects about 1% of men; ΔE 0.4 from the original
Deuteranopia#555A66no green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#525C5Eno blue cones; rare, and affects men and women equally; ΔE 6.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.89:1WCAG large text: AAA
Contrast with black, large text3.05:1WCAG large text: AA

Named colours

Dim grey · ΔE 9.7Dark slate grey · ΔE 15.2Slate grey · ΔE 15.3Gray · ΔE 17Light slate grey · ΔE 18.3Steel blue · ΔE 29
Nearest named CSS colourDim grey (#696969)ΔE 9.69, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#666256
Analogous#566266, #5A5666
Triadic#66565A, #5A6656
Split complementary#665A56, #626656
Tetradic#665662, #666256, #56665A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFC1C9
Lighter +30%#A3A7B2
Lighter +20%#888C9A
Lighter +10%#6D7282
Darker −10%#3F424A
Darker −20%#27292F
Darker −30%#101113
Darker −40%#000000
More saturated +25%#3F4E7E
Less saturated −25%#5E5E5E

Channel breakdown

R86
G90
B102
Red86 (33.7%)
Green90 (35.3%)
Blue102 (40%)
Hue225°
Saturation (HSL)8.51%
Lightness36.86%
Dominant channelBlue
Hex per channelR 56 · G 5A · B 66

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Every value on this page was computed from “565a66” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.