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Recognised as Colour

#0540AA

  • #0540AA
  • Blue
  • Dark
  • Nearest: Slate blue

#0540AA is a blue with RGB values 5, 64, 170 and HSL 219°, 94%, 34%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#0540AA#0540AA
HEX#0540AA
RGBrgb(5, 64, 170)
RGB (0–1)0.0196, 0.251, 0.6667
RGB percentages2%, 25.1%, 66.7%
HSLhsl(218.5, 94.3%, 34.3%)
HSV / HSBhsv(218.5, 97.1%, 66.7%)
CMYK97.1%, 62.4%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer344,234
CSS custom property--colour: #0540AA;

Brightness & contrast

Relative luminance0.06601WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.05:1
Contrast with white9.05:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#3B3B3B
Inverted#FABF55

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050ADno red cones; affects about 1% of men; ΔE 12.3 from the original
Deuteranopia#0042A8no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#005C6Fno blue cones; rare, and affects men and women equally; ΔE 61.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.05:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail

Named colours

Slate blue · ΔE 17.3Royal blue · ΔE 17.5Dark slateblue · ΔE 18.9Midnight blue · ΔE 19.4Rebecca purple · ΔE 21.1Medium slateblue · ΔE 25.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 17.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA6F05
Analogous#0593AA, #1C05AA
Triadic#AA0540, #40AA05
Split complementary#AA1D05, #92AA05
Tetradic#AA0593, #AA6F05, #05AA1D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#80ACFB
Lighter +30%#4E8CFA
Lighter +20%#1D6BF8
Lighter +10%#0653DC
Darker −10%#042D78
Darker −20%#021B47
Darker −30%#010815
Darker −40%#000000
More saturated +25%#003FAF
Less saturated −25%#1B4694

Channel breakdown

R5
G64
B170
Red5 (2%)
Green64 (25.1%)
Blue170 (66.7%)
Hue218.55°
Saturation (HSL)94.29%
Lightness34.31%
Dominant channelBlue
Hex per channelR 05 · G 40 · B AA

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Every value on this page was computed from “0540aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.