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Recognised as Colour

#3F1780

  • #3F1780
  • Violet
  • Dark
  • Nearest: Indigo

#3F1780 is a violet with RGB values 63, 23, 128 and HSL 263°, 70%, 30%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Indigo.

Colour values

#3F1780#3F1780
HEX#3F1780
RGBrgb(63, 23, 128)
RGB (0–1)0.2471, 0.0902, 0.502
RGB percentages24.7%, 9%, 50.2%
HSLhsl(262.9, 69.5%, 29.6%)
HSV / HSBhsv(262.9, 82%, 50.2%)
CMYK50.8%, 82%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,134,784
CSS custom property--colour: #3F1780;

Brightness & contrast

Relative luminance0.03228WCAG 2.x, 0 is black and 1 is white
Perceived brightness58 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.76:1
Contrast with white12.76:1WCAG normal text: AAA
Contrast with black1.65:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#C0E87F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003483no red cones; affects about 1% of men; ΔE 24 from the original
Deuteranopia#00307Eno green cones; the most common form, about 1% of men; ΔE 23.2 from the original
Tritanopia#2A354Cno blue cones; rare, and affects men and women equally; ΔE 53.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.76:1WCAG large text: AAA
Contrast with black, large text1.65:1WCAG large text: Fail

Named colours

Indigo · ΔE 9.3Midnight blue · ΔE 12.2Rebecca purple · ΔE 12.7Navy · ΔE 16.3Dark blue · ΔE 20Dark slateblue · ΔE 21.4
Nearest named CSS colourIndigo (#4B0082)ΔE 9.28, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#588017
Analogous#172380, #741780
Triadic#803F17, #17803F
Split complementary#807417, #238017
Tetradic#801723, #588017, #178074

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A57CE7
Lighter +30%#8750E0
Lighter +20%#6A27D6
Lighter +10%#541FAB
Darker −10%#2A0F55
Darker −20%#14072A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#3B0493
Less saturated −25%#432A6D

Channel breakdown

R63
G23
B128
Red63 (24.7%)
Green23 (9%)
Blue128 (50.2%)
Hue262.86°
Saturation (HSL)69.54%
Lightness29.61%
Dominant channelBlue
Hex per channelR 3F · G 17 · B 80

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Every value on this page was computed from “3f1780” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.