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Recognised as Colour

#2F48AA

  • #2F48AA
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2F48AA is a blue with RGB values 47, 72, 170 and HSL 228°, 57%, 43%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2F48AA#2F48AA
HEX#2F48AA
RGBrgb(47, 72, 170)
RGB (0–1)0.1843, 0.2824, 0.6667
RGB percentages18.4%, 28.2%, 66.7%
HSLhsl(227.8, 56.7%, 42.5%)
HSV / HSBhsv(227.8, 72.4%, 66.7%)
CMYK72.4%, 57.6%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,098,794
CSS custom property--colour: #2F48AA;

Brightness & contrast

Relative luminance0.08141WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.99:1
Contrast with white7.99:1WCAG normal text: AAA
Contrast with black2.63:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#D0B755

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0056ADno red cones; affects about 1% of men; ΔE 12.6 from the original
Deuteranopia#004BA8no green cones; the most common form, about 1% of men; ΔE 6.5 from the original
Tritanopia#006072no 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 text7.99:1WCAG large text: AAA
Contrast with black, large text2.63:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.8Slate blue · ΔE 15.8Royal blue · ΔE 16.8Rebecca purple · ΔE 19.7Midnight blue · ΔE 20.4Medium purple · ΔE 24.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA912F
Analogous#2F86AA, #532FAA
Triadic#AA2F48, #48AA2F
Split complementary#AA542F, #85AA2F
Tetradic#AA2F86, #AA912F, #2FAA54

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B9C4EC
Lighter +30%#91A1E1
Lighter +20%#697FD6
Lighter +10%#415DCB
Darker −10%#243782
Darker −20%#19265A
Darker −30%#0E1532
Darker −40%#03040A
More saturated +25%#1438C5
Less saturated −25%#4A588F

Channel breakdown

R47
G72
B170
Red47 (18.4%)
Green72 (28.2%)
Blue170 (66.7%)
Hue227.8°
Saturation (HSL)56.68%
Lightness42.55%
Dominant channelBlue
Hex per channelR 2F · G 48 · B AA

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Every value on this page was computed from “2f48aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.