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Recognised as Colour

#575FE1

  • #575FE1
  • Blue
  • Dark
  • Nearest: Medium slateblue

#575FE1 is a blue with RGB values 87, 95, 225 and HSL 237°, 70%, 61%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#575FE1#575FE1
HEX#575FE1
RGBrgb(87, 95, 225)
RGB (0–1)0.3412, 0.3725, 0.8824
RGB percentages34.1%, 37.3%, 88.2%
HSLhsl(236.5, 69.7%, 61.2%)
HSV / HSBhsv(236.5, 61.3%, 88.2%)
CMYK61.3%, 57.8%, 0%, 11.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,726,177
CSS custom property--colour: #575FE1;

Brightness & contrast

Relative luminance0.15647WCAG 2.x, 0 is black and 1 is white
Perceived brightness115.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.09:1
Contrast with white5.09:1WCAG normal text: AA
Contrast with black4.13:1WCAG normal text: Fail
Greyscale equivalent#676767
Inverted#A8A01E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0074E5no red cones; affects about 1% of men; ΔE 20 from the original
Deuteranopia#0068DEno green cones; the most common form, about 1% of men; ΔE 14.6 from the original
Tritanopia#007E97no blue cones; rare, and affects men and women equally; ΔE 72 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.09:1WCAG large text: AAA
Contrast with black, large text4.13:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 8Slate blue · ΔE 9.7Royal blue · ΔE 9.8Medium purple · ΔE 19.3Rebecca purple · ΔE 25.4Dodgerblue · ΔE 29.1
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 8.01, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E1D957
Analogous#57A4E1, #9457E1
Triadic#E1575F, #5FE157
Split complementary#E19457, #A4E157
Tetradic#E157A4, #E1D957, #57E194

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9DBF8
Lighter +20%#AEB1F0
Lighter +10%#8288E9
Darker −10%#2C36D9
Darker −20%#2028B2
Darker −30%#181F87
Darker −40%#10155C
More saturated +25%#3E49FA
Less saturated −25%#7075C8

Channel breakdown

R87
G95
B225
Red87 (34.1%)
Green95 (37.3%)
Blue225 (88.2%)
Hue236.52°
Saturation (HSL)69.7%
Lightness61.18%
Dominant channelBlue
Hex per channelR 57 · G 5F · B E1

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Every value on this page was computed from “575fe1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.