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Colour

#0047AD

  • #0047AD
  • Blue
  • Dark
  • Nearest: Royal blue

#0047AD is a blue with RGB values 0, 71, 173 and HSL 215°, 100%, 34%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#0047AD#0047AD
HEX#0047AD
RGBrgb(0, 71, 173)
RGB (0–1)0, 0.2784, 0.6784
RGB percentages0%, 27.8%, 67.8%
HSLhsl(215.4, 100%, 33.9%)
HSV / HSBhsv(215.4, 100%, 67.8%)
CMYK100%, 59%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer18,349
CSS custom property--colour: #0047AD;

Brightness & contrast

Relative luminance0.07524WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.38:1
Contrast with white8.38:1WCAG normal text: AAA
Contrast with black2.5:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#FFB852

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055B0no red cones; affects about 1% of men; ΔE 10.6 from the original
Deuteranopia#0047ABno green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#006173no blue cones; rare, and affects men and women equally; ΔE 58.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.38:1WCAG large text: AAA
Contrast with black, large text2.5:1WCAG large text: Fail

Named colours

Royal blue · ΔE 16.3Dark slateblue · ΔE 17.6Slate blue · ΔE 17.8Midnight blue · ΔE 21.4Rebecca purple · ΔE 23Medium slateblue · ΔE 26.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 16.26, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD6600
Analogous#009EAD, #0F00AD
Triadic#AD0047, #47AD00
Split complementary#AD0F00, #9EAD00
Tetradic#AD009E, #AD6600, #00AD10

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7AB1FF
Lighter +30%#4793FF
Lighter +20%#1474FF
Lighter +10%#005CE0
Darker −10%#00327A
Darker −20%#001D47
Darker −30%#000814
Darker −40%#000000
More saturated +25%#0047AD
Less saturated −25%#164B97

Channel breakdown

R0
G71
B173
Red0 (0%)
Green71 (27.8%)
Blue173 (67.8%)
Hue215.38°
Saturation (HSL)100%
Lightness33.92%
Dominant channelBlue
Hex per channelR 00 · G 47 · B AD

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Every value on this page was computed from “0047ad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.