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Recognised as Colour

#391D52

  • #391D52
  • Violet
  • Dark
  • Nearest: Dark slateblue

#391D52 is a violet with RGB values 57, 29, 82 and HSL 272°, 48%, 22%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#391D52#391D52
HEX#391D52
RGBrgb(57, 29, 82)
RGB (0–1)0.2235, 0.1137, 0.3216
RGB percentages22.4%, 11.4%, 32.2%
HSLhsl(271.7, 47.7%, 21.8%)
HSV / HSBhsv(271.7, 64.6%, 32.2%)
CMYK30.5%, 64.6%, 0%, 67.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,743,058
CSS custom property--colour: #391D52;

Brightness & contrast

Relative luminance0.02358WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.27:1
Contrast with white14.27:1WCAG normal text: AAA
Contrast with black1.47:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#C6E2AD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#062A54no red cones; affects about 1% of men; ΔE 19.5 from the original
Deuteranopia#132B51no green cones; the most common form, about 1% of men; ΔE 19.8 from the original
Tritanopia#352734no blue cones; rare, and affects men and women equally; ΔE 26.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.27:1WCAG large text: AAA
Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.1Midnight blue · ΔE 23.3Rebecca purple · ΔE 30.8Purple · ΔE 37Indigo · ΔE 37.2Black · ΔE 41
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.11, a distinctly different colour
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#36521D
Analogous#1E1D52, #521D51
Triadic#52391D, #1D5239
Split complementary#51521D, #1D521F
Tetradic#521F1D, #36521D, #1D5152

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A06FCC
Lighter +30%#8749BF
Lighter +20%#6D389D
Lighter +10%#532A78
Darker −10%#1F102C
Darker −20%#050207
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3A0F60
Less saturated −25%#382B44

Channel breakdown

R57
G29
B82
Red57 (22.4%)
Green29 (11.4%)
Blue82 (32.2%)
Hue271.7°
Saturation (HSL)47.75%
Lightness21.76%
Dominant channelBlue
Hex per channelR 39 · G 1D · B 52

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Every value on this page was computed from “391d52” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.