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Recognised as Colour

#5177A9

  • #5177A9
  • Blue
  • Dark
  • Nearest: Steel blue

#5177A9 is a blue with RGB values 81, 119, 169 and HSL 214°, 35%, 49%. It is a dark colour, so white text on it reaches 4.6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#5177A9#5177A9
HEX#5177A9
RGBrgb(81, 119, 169)
RGB (0–1)0.3176, 0.4667, 0.6627
RGB percentages31.8%, 46.7%, 66.3%
HSLhsl(214.1, 35.2%, 49%)
HSV / HSBhsv(214.1, 52.1%, 66.3%)
CMYK52.1%, 29.6%, 0%, 33.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,339,049
CSS custom property--colour: #5177A9;

Brightness & contrast

Relative luminance0.17808WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.6:1
Contrast with white4.6:1WCAG normal text: AA
Contrast with black4.56:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#AE8856

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#637AABno red cones; affects about 1% of men; ΔE 4.5 from the original
Deuteranopia#5871A8no green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#258289no blue cones; rare, and affects men and women equally; ΔE 31.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.6:1WCAG large text: AAA
Contrast with black, large text4.56:1WCAG large text: AAA

Named colours

Steel blue · ΔE 6.4Slate grey · ΔE 20.8Light slate grey · ΔE 21.1Cornflower blue · ΔE 23.8Gray · ΔE 31.1Dim grey · ΔE 31.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 6.36, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A98351
Analogous#51A3A9, #5751A9
Triadic#A95177, #77A951
Split complementary#A95751, #A3A951
Tetradic#A951A3, #A98351, #51A957

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9E2ED
Lighter +30%#B7C7DC
Lighter +20%#94ACCC
Lighter +10%#7291BB
Darker −10%#405F87
Darker −20%#304664
Darker −30%#1F2E42
Darker −40%#0F161F
More saturated +25%#3273C8
Less saturated −25%#707B8A

Channel breakdown

R81
G119
B169
Red81 (31.8%)
Green119 (46.7%)
Blue169 (66.3%)
Hue214.09°
Saturation (HSL)35.2%
Lightness49.02%
Dominant channelBlue
Hex per channelR 51 · G 77 · B A9

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Every value on this page was computed from “5177a9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.