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Recognised as Colour

#370B37

  • #370B37
  • Magenta
  • Dark
  • Nearest: Dark slateblue

#370B37 is a magenta with RGB values 55, 11, 55 and HSL 300°, 67%, 13%. It is a dark colour, so white text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#370B37#370B37
HEX#370B37
RGBrgb(55, 11, 55)
RGB (0–1)0.2157, 0.0431, 0.2157
RGB percentages21.6%, 4.3%, 21.6%
HSLhsl(300, 66.7%, 12.9%)
HSV / HSBhsv(300, 80%, 21.6%)
CMYK0%, 80%, 0%, 78.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,607,351
CSS custom property--colour: #370B37;

Brightness & contrast

Relative luminance0.01327WCAG 2.x, 0 is black and 1 is white
Perceived brightness36.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.59:1
Contrast with white16.59:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#C8F4C8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#051B38no red cones; affects about 1% of men; ΔE 24.2 from the original
Deuteranopia#162036no green cones; the most common form, about 1% of men; ΔE 24.8 from the original
Tritanopia#391120no blue cones; rare, and affects men and women equally; ΔE 18.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.59:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 31.2Midnight blue · ΔE 32.4Black · ΔE 35Rebecca purple · ΔE 39.4Purple · ΔE 40.6Indigo · ΔE 43.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 31.21, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0B370B
Analogous#210B37, #370B21
Triadic#37370B, #0B3737
Split complementary#21370B, #0B3721
Tetradic#37210B, #0B370B, #0B2137

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D737D7
Lighter +30%#B725B7
Lighter +20%#8C1C8C
Lighter +10%#621362
Darker −10%#0D030D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3F033F
Less saturated −25%#2F132F

Channel breakdown

R55
G11
B55
Red55 (21.6%)
Green11 (4.3%)
Blue55 (21.6%)
Hue300°
Saturation (HSL)66.67%
Lightness12.94%
Dominant channelRed and Blue
Hex per channelR 37 · G 0B · B 37

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Every value on this page was computed from “370b37” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.