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Recognised as Colour

#2F3197

  • #2F3197
  • Blue
  • Dark
  • Nearest: Midnight blue

#2F3197 is a blue with RGB values 47, 49, 151 and HSL 239°, 53%, 39%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#2F3197#2F3197
HEX#2F3197
RGBrgb(47, 49, 151)
RGB (0–1)0.1843, 0.1922, 0.5922
RGB percentages18.4%, 19.2%, 59.2%
HSLhsl(238.8, 52.5%, 38.8%)
HSV / HSBhsv(238.8, 68.9%, 59.2%)
CMYK68.9%, 67.5%, 0%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,092,887
CSS custom property--colour: #2F3197;

Brightness & contrast

Relative luminance0.05035WCAG 2.x, 0 is black and 1 is white
Perceived brightness68.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.46:1
Contrast with white10.46:1WCAG normal text: AAA
Contrast with black2.01:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#D0CE68

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00449Ano red cones; affects about 1% of men; ΔE 16.6 from the original
Deuteranopia#003B95no green cones; the most common form, about 1% of men; ΔE 11.7 from the original
Tritanopia#004C5Fno 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 text10.46:1WCAG large text: AAA
Contrast with black, large text2.01:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12.8Rebecca purple · ΔE 14.5Dark slateblue · ΔE 16.2Slate blue · ΔE 18.8Indigo · ΔE 19.8Navy · ΔE 21.7
Nearest named CSS colourMidnight blue (#191970)ΔE 12.82, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#97952F
Analogous#2F6597, #612F97
Triadic#972F31, #31972F
Split complementary#97612F, #65972F
Tetradic#972F65, #97952F, #2F9761

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ADAEE5
Lighter +30%#8687D9
Lighter +20%#5F61CD
Lighter +10%#3B3EBE
Darker −10%#232470
Darker −20%#171849
Darker −30%#0B0B22
Darker −40%#000000
More saturated +25%#1619B0
Less saturated −25%#48497E

Channel breakdown

R47
G49
B151
Red47 (18.4%)
Green49 (19.2%)
Blue151 (59.2%)
Hue238.85°
Saturation (HSL)52.53%
Lightness38.82%
Dominant channelBlue
Hex per channelR 2F · G 31 · B 97

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Every value on this page was computed from “2f3197” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.