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Recognised as Colour

#2F45AD

  • #2F45AD
  • Blue
  • Dark
  • Nearest: Slate blue

#2F45AD is a blue with RGB values 47, 69, 173 and HSL 230°, 57%, 43%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#2F45AD#2F45AD
HEX#2F45AD
RGBrgb(47, 69, 173)
RGB (0–1)0.1843, 0.2706, 0.6784
RGB percentages18.4%, 27.1%, 67.8%
HSLhsl(229.5, 57.3%, 43.1%)
HSV / HSBhsv(229.5, 72.8%, 67.8%)
CMYK72.8%, 60.1%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,098,029
CSS custom property--colour: #2F45AD;

Brightness & contrast

Relative luminance0.07878WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.15:1
Contrast with white8.15:1WCAG normal text: AAA
Contrast with black2.58:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#D0BA52

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0055B0no red cones; affects about 1% of men; ΔE 14 from the original
Deuteranopia#004AABno green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#005F72no blue cones; rare, and affects men and women equally; ΔE 60.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.15:1WCAG large text: AAA
Contrast with black, large text2.58:1WCAG large text: Fail

Named colours

Slate blue · ΔE 14Royal blue · ΔE 15.9Dark slateblue · ΔE 16.4Rebecca purple · ΔE 18.4Midnight blue · ΔE 20.1Medium slateblue · ΔE 23.7
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 14.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD972F
Analogous#2F84AD, #582FAD
Triadic#AD2F45, #45AD2F
Split complementary#AD582F, #84AD2F
Tetradic#AD2F84, #AD972F, #2FAD58

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BBC4ED
Lighter +30%#93A1E2
Lighter +20%#6B7ED7
Lighter +10%#435BCC
Darker −10%#243585
Darker −20%#19255D
Darker −30%#0E1535
Darker −40%#03050D
More saturated +25%#1433C9
Less saturated −25%#4B5792

Channel breakdown

R47
G69
B173
Red47 (18.4%)
Green69 (27.1%)
Blue173 (67.8%)
Hue229.52°
Saturation (HSL)57.27%
Lightness43.14%
Dominant channelBlue
Hex per channelR 2F · G 45 · B AD

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Every value on this page was computed from “2f45ad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.