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Recognised as Colour

#552F80

  • #552F80
  • Violet
  • Dark
  • Nearest: Dark slateblue

#552F80 is a violet with RGB values 85, 47, 128 and HSL 268°, 46%, 34%. 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

#552F80#552F80
HEX#552F80
RGBrgb(85, 47, 128)
RGB (0–1)0.3333, 0.1843, 0.502
RGB percentages33.3%, 18.4%, 50.2%
HSLhsl(268.1, 46.3%, 34.3%)
HSV / HSBhsv(268.1, 63.3%, 50.2%)
CMYK33.6%, 63.3%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,582,720
CSS custom property--colour: #552F80;

Brightness & contrast

Relative luminance0.05523WCAG 2.x, 0 is black and 1 is white
Perceived brightness73 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.98:1
Contrast with white9.98:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#AAD07F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004283no red cones; affects about 1% of men; ΔE 25.6 from the original
Deuteranopia#17427Eno green cones; the most common form, about 1% of men; ΔE 25.9 from the original
Tritanopia#4D4053no blue cones; rare, and affects men and women equally; ΔE 39.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.98:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.3Rebecca purple · ΔE 12.3Midnight blue · ΔE 16.2Indigo · ΔE 23.3Purple · ΔE 24.6Slate blue · ΔE 25.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.3, clearly different but related
Hue familyviolet
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A802F
Analogous#2F3280, #7E2F80
Triadic#80552F, #2F8055
Split complementary#807E2F, #31802F
Tetradic#802F31, #5A802F, #2F807E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BC9FDC
Lighter +30%#A17ACE
Lighter +20%#8755C0
Lighter +10%#6E3DA5
Darker −10%#3C215B
Darker −20%#231435
Darker −30%#0B0610
Darker −40%#000000
More saturated +25%#541996
Less saturated −25%#56456A

Channel breakdown

R85
G47
B128
Red85 (33.3%)
Green47 (18.4%)
Blue128 (50.2%)
Hue268.15°
Saturation (HSL)46.29%
Lightness34.31%
Dominant channelBlue
Hex per channelR 55 · G 2F · B 80

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Every value on this page was computed from “552f80” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.