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Recognised as Colour

#5747BB

  • #5747BB
  • Blue
  • Dark
  • Nearest: Slate blue

#5747BB is a blue with RGB values 87, 71, 187 and HSL 248°, 46%, 51%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#5747BB#5747BB
HEX#5747BB
RGBrgb(87, 71, 187)
RGB (0–1)0.3412, 0.2784, 0.7333
RGB percentages34.1%, 27.8%, 73.3%
HSLhsl(248.3, 46%, 50.6%)
HSV / HSBhsv(248.3, 62%, 73.3%)
CMYK53.5%, 62%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,719,995
CSS custom property--colour: #5747BB;

Brightness & contrast

Relative luminance0.10121WCAG 2.x, 0 is black and 1 is white
Perceived brightness96 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.94:1
Contrast with white6.94:1WCAG normal text: AA
Contrast with black3.02:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#A8B844

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005DBFno red cones; affects about 1% of men; ΔE 22.4 from the original
Deuteranopia#0056B9no green cones; the most common form, about 1% of men; ΔE 20 from the original
Tritanopia#2D637Ano blue cones; rare, and affects men and women equally; ΔE 63.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.94:1WCAG large text: AAA
Contrast with black, large text3.02:1WCAG large text: AA

Named colours

Slate blue · ΔE 7.7Rebecca purple · ΔE 13.9Medium slateblue · ΔE 15.7Royal blue · ΔE 16.5Medium purple · ΔE 19.3Dark slateblue · ΔE 22.1
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 7.7, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ABBB47
Analogous#4771BB, #9147BB
Triadic#BB5747, #47BB57
Split complementary#BB9147, #71BB47
Tetradic#BB4771, #ABBB47, #47BB91

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFDCF2
Lighter +30%#BDB7E4
Lighter +20%#9B91D7
Lighter +10%#796CC9
Darker −10%#453897
Darker −20%#342A72
Darker −30%#231C4D
Darker −40%#120F27
More saturated +25%#4028DB
Less saturated −25%#6E679B

Channel breakdown

R87
G71
B187
Red87 (34.1%)
Green71 (27.8%)
Blue187 (73.3%)
Hue248.28°
Saturation (HSL)46.03%
Lightness50.59%
Dominant channelBlue
Hex per channelR 57 · G 47 · B BB

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Every value on this page was computed from “5747bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.