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Recognised as Colour

#371F47

  • #371F47
  • Violet
  • Dark
  • Nearest: Dark slateblue

#371F47 is a violet with RGB values 55, 31, 71 and HSL 276°, 39%, 20%. It is a dark colour, so white text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#371F47#371F47
HEX#371F47
RGBrgb(55, 31, 71)
RGB (0–1)0.2157, 0.1216, 0.2784
RGB percentages21.6%, 12.2%, 27.8%
HSLhsl(276, 39.2%, 20%)
HSV / HSBhsv(276, 56.3%, 27.8%)
CMYK22.5%, 56.3%, 0%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,612,487
CSS custom property--colour: #371F47;

Brightness & contrast

Relative luminance0.02247WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.49:1
Contrast with white14.49:1WCAG normal text: AAA
Contrast with black1.45:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#C8E0B8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#152848no red cones; affects about 1% of men; ΔE 16.1 from the original
Deuteranopia#1C2A46no green cones; the most common form, about 1% of men; ΔE 16.6 from the original
Tritanopia#35262Fno blue cones; rare, and affects men and women equally; ΔE 20.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.49:1WCAG large text: AAA
Contrast with black, large text1.45:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.3Midnight blue · ΔE 31.1Black · ΔE 33.5Rebecca purple · ΔE 38.4Dark slate grey · ΔE 39.1Dim grey · ΔE 40.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.3, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2F471F
Analogous#231F47, #471F43
Triadic#47371F, #1F4737
Split complementary#43471F, #1F4723
Tetradic#47231F, #2F471F, #1F4347

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A171C1
Lighter +30%#894EB2
Lighter +20%#6E3E8E
Lighter +10%#522E6A
Darker −10%#1B1024
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3A1254
Less saturated −25%#342C3A

Channel breakdown

R55
G31
B71
Red55 (21.6%)
Green31 (12.2%)
Blue71 (27.8%)
Hue276°
Saturation (HSL)39.22%
Lightness20%
Dominant channelBlue
Hex per channelR 37 · G 1F · B 47

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Every value on this page was computed from “371f47” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.