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Recognised as Colour

#47377A

  • #47377A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#47377A is a blue with RGB values 71, 55, 122 and HSL 254°, 38%, 35%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#47377A#47377A
HEX#47377A
RGBrgb(71, 55, 122)
RGB (0–1)0.2784, 0.2157, 0.4784
RGB percentages27.8%, 21.6%, 47.8%
HSLhsl(254.3, 37.9%, 34.7%)
HSV / HSBhsv(254.3, 54.9%, 47.8%)
CMYK41.8%, 54.9%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,667,258
CSS custom property--colour: #47377A;

Brightness & contrast

Relative luminance0.05477WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.02:1
Contrast with white10.02:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#B8C885

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#19437Cno red cones; affects about 1% of men; ΔE 16.9 from the original
Deuteranopia#1C4178no green cones; the most common form, about 1% of men; ΔE 16.8 from the original
Tritanopia#394553no blue cones; rare, and affects men and women equally; ΔE 36.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.02:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 6.9Midnight blue · ΔE 19.7Rebecca purple · ΔE 22.2Slate blue · ΔE 30.2Medium purple · ΔE 32.9Indigo · ΔE 33.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 6.94, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A7A37
Analogous#37487A, #69377A
Triadic#7A4737, #377A47
Split complementary#7A6937, #487A37
Tetradic#7A3748, #6A7A37, #377A69

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2A6D7
Lighter +30%#9383C7
Lighter +20%#7560B7
Lighter +10%#5B479D
Darker −10%#332757
Darker −20%#1E1734
Darker −30%#0A0711
Darker −40%#000000
More saturated +25%#3B2190
Less saturated −25%#534D64

Channel breakdown

R71
G55
B122
Red71 (27.8%)
Green55 (21.6%)
Blue122 (47.8%)
Hue254.33°
Saturation (HSL)37.85%
Lightness34.71%
Dominant channelBlue
Hex per channelR 47 · G 37 · B 7A

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Every value on this page was computed from “47377a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.