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Recognised as Colour

#5173B6

  • #5173B6
  • Blue
  • Dark
  • Nearest: Steel blue

#5173B6 is a blue with RGB values 81, 115, 182 and HSL 220°, 41%, 52%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5173B6#5173B6
HEX#5173B6
RGBrgb(81, 115, 182)
RGB (0–1)0.3176, 0.451, 0.7137
RGB percentages31.8%, 45.1%, 71.4%
HSLhsl(219.8, 40.9%, 51.6%)
HSV / HSBhsv(219.8, 55.5%, 71.4%)
CMYK55.5%, 36.8%, 0%, 28.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,338,038
CSS custom property--colour: #5173B6;

Brightness & contrast

Relative luminance0.17388WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.69:1
Contrast with white4.69:1WCAG normal text: AA
Contrast with black4.48:1WCAG normal text: Fail
Greyscale equivalent#717171
Inverted#AE8C49

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5879B9no red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#4B70B5no green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#13828Cno blue cones; rare, and affects men and women equally; ΔE 41.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.69:1WCAG large text: AAA
Contrast with black, large text4.48:1WCAG large text: AA

Named colours

Steel blue · ΔE 14.3Cornflower blue · ΔE 16.7Dark slateblue · ΔE 25.7Dodgerblue · ΔE 26.5Slate grey · ΔE 30.6Light slate grey · ΔE 30.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 14.33, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B69451
Analogous#51A5B6, #6151B6
Triadic#B65173, #73B651
Split complementary#B66251, #A5B651
Tetradic#B651A6, #B69451, #51B662

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E1E7F2
Lighter +30%#BDCAE3
Lighter +20%#99ADD4
Lighter +10%#7590C5
Darker −10%#3F5C95
Darker −20%#304671
Darker −30%#21304D
Darker −40%#111A2A
More saturated +25%#3269D5
Less saturated −25%#707D97

Channel breakdown

R81
G115
B182
Red81 (31.8%)
Green115 (45.1%)
Blue182 (71.4%)
Hue219.8°
Saturation (HSL)40.89%
Lightness51.57%
Dominant channelBlue
Hex per channelR 51 · G 73 · B B6

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Every value on this page was computed from “5173b6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.