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Recognised as Colour

#575AAA

  • #575AAA
  • Blue
  • Dark
  • Nearest: Dark slateblue

#575AAA is a blue with RGB values 87, 90, 170 and HSL 238°, 33%, 50%. It is a dark colour, so white text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#575AAA#575AAA
HEX#575AAA
RGBrgb(87, 90, 170)
RGB (0–1)0.3412, 0.3529, 0.6667
RGB percentages34.1%, 35.3%, 66.7%
HSLhsl(237.8, 32.8%, 50.4%)
HSV / HSBhsv(237.8, 48.8%, 66.7%)
CMYK48.8%, 47.1%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,724,842
CSS custom property--colour: #575AAA;

Brightness & contrast

Relative luminance0.12241WCAG 2.x, 0 is black and 1 is white
Perceived brightness101.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.09:1
Contrast with white6.09:1WCAG normal text: AA
Contrast with black3.45:1WCAG normal text: Fail
Greyscale equivalent#5F5F5F
Inverted#A8A555

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3865ADno red cones; affects about 1% of men; ΔE 12.5 from the original
Deuteranopia#325FA8no green cones; the most common form, about 1% of men; ΔE 11.4 from the original
Tritanopia#386B7Ano blue cones; rare, and affects men and women equally; ΔE 44.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.09:1WCAG large text: AAA
Contrast with black, large text3.45:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 12Slate blue · ΔE 21.1Medium purple · ΔE 21.7Royal blue · ΔE 23.3Rebecca purple · ΔE 23.8Cornflower blue · ΔE 24.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.98, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AAA757
Analogous#5783AA, #7E57AA
Triadic#AA575A, #5AAA57
Split complementary#AA7E57, #83AA57
Tetradic#AA5783, #AAA757, #57AA7E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEDFEF
Lighter +30%#BDBEDD
Lighter +20%#9B9DCC
Lighter +10%#797BBB
Darker −10%#454889
Darker −20%#343667
Darker −30%#232445
Darker −40%#121223
More saturated +25%#373DCA
Less saturated −25%#77778A

Channel breakdown

R87
G90
B170
Red87 (34.1%)
Green90 (35.3%)
Blue170 (66.7%)
Hue237.83°
Saturation (HSL)32.81%
Lightness50.39%
Dominant channelBlue
Hex per channelR 57 · G 5A · B AA

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Every value on this page was computed from “575aaa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.