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Recognised as Colour

#2D47A9

  • #2D47A9
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2D47A9 is a blue with RGB values 45, 71, 169 and HSL 227°, 58%, 42%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2D47A9#2D47A9
HEX#2D47A9
RGBrgb(45, 71, 169)
RGB (0–1)0.1765, 0.2784, 0.6627
RGB percentages17.6%, 27.8%, 66.3%
HSLhsl(227.4, 57.9%, 42%)
HSV / HSBhsv(227.4, 73.4%, 66.3%)
CMYK73.4%, 58%, 0%, 33.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,967,465
CSS custom property--colour: #2D47A9;

Brightness & contrast

Relative luminance0.07929WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.12:1
Contrast with white8.12:1WCAG normal text: AAA
Contrast with black2.59:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#D2B856

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055ACno red cones; affects about 1% of men; ΔE 12.4 from the original
Deuteranopia#004AA7no green cones; the most common form, about 1% of men; ΔE 6.3 from the original
Tritanopia#005F71no blue cones; rare, and affects men and women equally; ΔE 57 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.12:1WCAG large text: AAA
Contrast with black, large text2.59:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.8Slate blue · ΔE 16.1Royal blue · ΔE 17.1Rebecca purple · ΔE 19.7Midnight blue · ΔE 20.1Medium purple · ΔE 24.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A98F2D
Analogous#2D85A9, #512DA9
Triadic#A92D47, #47A92D
Split complementary#A9512D, #85A92D
Tetradic#A92D85, #A98F2D, #2DA951

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B6C2EC
Lighter +30%#8E9FE1
Lighter +20%#667DD6
Lighter +10%#3E5BCB
Darker −10%#223681
Darker −20%#182558
Darker −30%#0D1430
Darker −40%#020308
More saturated +25%#1237C4
Less saturated −25%#48578E

Channel breakdown

R45
G71
B169
Red45 (17.6%)
Green71 (27.8%)
Blue169 (66.3%)
Hue227.42°
Saturation (HSL)57.94%
Lightness41.96%
Dominant channelBlue
Hex per channelR 2D · G 47 · B A9

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Every value on this page was computed from “2d47a9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.