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Colour

#5578FF

  • #5578FF
  • Blue
  • Dark
  • Nearest: Royal blue

#5578FF is a blue with RGB values 85, 120, 255 and HSL 228°, 100%, 67%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#5578FF#5578FF
HEX#5578FF
RGBrgb(85, 120, 255)
RGB (0–1)0.3333, 0.4706, 1
RGB percentages33.3%, 47.1%, 100%
HSLhsl(227.6, 100%, 66.7%)
HSV / HSBhsv(227.6, 66.7%, 100%)
CMYK66.7%, 52.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,601,535
CSS custom property--colour: #5578FF;

Brightness & contrast

Relative luminance0.22584WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.52:1
Contrast with white3.81:1WCAG normal text: Fail
Contrast with black5.52:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#AA8700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#138BFFno red cones; affects about 1% of men; ΔE 18.7 from the original
Deuteranopia#007BFCno green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#0098B0no blue cones; rare, and affects men and women equally; ΔE 73.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.81:1WCAG large text: AA
Contrast with black, large text5.52:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.7Medium slateblue · ΔE 12.4Slate blue · ΔE 17.1Medium purple · ΔE 21.9Dodgerblue · ΔE 22.1Cornflower blue · ΔE 30.9
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.71, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFDC55
Analogous#55CDFF, #8755FF
Triadic#FF5578, #78FF55
Split complementary#FF8755, #CDFF55
Tetradic#FF55CD, #FFDC55, #55FF87

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EEF1FF
Lighter +20%#BBC9FF
Lighter +10%#88A1FF
Darker −10%#224FFF
Darker −20%#0031EE
Darker −30%#0027BB
Darker −40%#001C88
More saturated +25%#5578FF
Less saturated −25%#6A84EA

Channel breakdown

R85
G120
B255
Red85 (33.3%)
Green120 (47.1%)
Blue255 (100%)
Hue227.65°
Saturation (HSL)100%
Lightness66.67%
Dominant channelBlue
Hex per channelR 55 · G 78 · B FF

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Every value on this page was computed from “5578ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.