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Recognised as Colour

#505C71

  • #505C71
  • Blue
  • Dark
  • Nearest: Dim grey

#505C71 is a blue with RGB values 80, 92, 113 and HSL 218°, 17%, 38%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#505C71#505C71
HEX#505C71
RGBrgb(80, 92, 113)
RGB (0–1)0.3137, 0.3608, 0.4431
RGB percentages31.4%, 36.1%, 44.3%
HSLhsl(218.2, 17.1%, 37.8%)
HSV / HSBhsv(218.2, 29.2%, 44.3%)
CMYK29.2%, 18.6%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,266,545
CSS custom property--colour: #505C71;

Brightness & contrast

Relative luminance0.10552WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.75:1
Contrast with white6.75:1WCAG normal text: AA
Contrast with black3.11:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#AFA38E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#555D72no red cones; affects about 1% of men; ΔE 1.6 from the original
Deuteranopia#525A71no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#476063no blue cones; rare, and affects men and women equally; ΔE 12.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.75:1WCAG large text: AAA
Contrast with black, large text3.11:1WCAG large text: AA

Named colours

Dim grey · ΔE 14.6Slate grey · ΔE 14.6Dark slate grey · ΔE 17.5Light slate grey · ΔE 17.5Gray · ΔE 20Steel blue · ΔE 23.7
Nearest named CSS colourDim grey (#696969)ΔE 14.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#716550
Analogous#506C71, #555071
Triadic#71505C, #5C7150
Split complementary#715550, #6D7150
Tetradic#71506C, #716550, #507155

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BDC4D0
Lighter +30%#9FA9BB
Lighter +20%#818EA6
Lighter +10%#65748F
Darker −10%#3B4453
Darker −20%#262B35
Darker −30%#111317
Darker −40%#000000
More saturated +25%#385589
Less saturated −25%#616161

Channel breakdown

R80
G92
B113
Red80 (31.4%)
Green92 (36.1%)
Blue113 (44.3%)
Hue218.18°
Saturation (HSL)17.1%
Lightness37.84%
Dominant channelBlue
Hex per channelR 50 · G 5C · B 71

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Every value on this page was computed from “505c71” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.