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Recognised as Colour

#000047

  • #000047
  • Blue
  • Dark
  • Nearest: Midnight blue

#000047 is a blue with RGB values 0, 0, 71 and HSL 240°, 100%, 14%. It is a dark colour, so white text on it reaches 19.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#000047#000047
HEX#000047
RGBrgb(0, 0, 71)
RGB (0–1)0, 0, 0.2784
RGB percentages0%, 0%, 27.8%
HSLhsl(240, 100%, 13.9%)
HSV / HSBhsv(240, 100%, 27.8%)
CMYK100%, 100%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer71
CSS custom property--colour: #000047;

Brightness & contrast

Relative luminance0.00455WCAG 2.x, 0 is black and 1 is white
Perceived brightness24 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.25:1
Contrast with white19.25:1WCAG normal text: AAA
Contrast with black1.09:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FFFFB8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001249no red cones; affects about 1% of men; ΔE 11.4 from the original
Deuteranopia#000A46no green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#001826no blue cones; rare, and affects men and women equally; ΔE 42.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.25:1WCAG large text: AAA
Contrast with black, large text1.09:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.9Dark slateblue · ΔE 26.8Indigo · ΔE 31.4Navy · ΔE 31.9Rebecca purple · ΔE 33.1Dark blue · ΔE 37.1
Nearest named CSS colourMidnight blue (#191970)ΔE 14.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#474700
Analogous#002447, #240047
Triadic#470000, #004700
Split complementary#472400, #244700
Tetradic#470024, #474700, #004724

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1414FF
Lighter +30%#0000E0
Lighter +20%#0000AD
Lighter +10%#00007A
Darker −10%#000014
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000047
Less saturated −25%#09093E

Channel breakdown

R0
G0
B71
Red0 (0%)
Green0 (0%)
Blue71 (27.8%)
Hue240°
Saturation (HSL)100%
Lightness13.92%
Dominant channelBlue
Hex per channelR 00 · G 00 · B 47

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Every value on this page was computed from “hex 000047” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.