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Recognised as Colour

#4240AE

  • #4240AE
  • Blue
  • Dark
  • Nearest: Slate blue

#4240AE is a blue with RGB values 66, 64, 174 and HSL 241°, 46%, 47%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#4240AE#4240AE
HEX#4240AE
RGBrgb(66, 64, 174)
RGB (0–1)0.2588, 0.251, 0.6824
RGB percentages25.9%, 25.1%, 68.2%
HSLhsl(241.1, 46.2%, 46.7%)
HSV / HSBhsv(241.1, 63.2%, 68.2%)
CMYK62.1%, 63.2%, 0%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,341,934
CSS custom property--colour: #4240AE;

Brightness & contrast

Relative luminance0.07881WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.15:1
Contrast with white8.15:1WCAG normal text: AAA
Contrast with black2.58:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#BDBF51

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0054B2no red cones; affects about 1% of men; ΔE 18.4 from the original
Deuteranopia#004BACno green cones; the most common form, about 1% of men; ΔE 14.4 from the original
Tritanopia#005C71no blue cones; rare, and affects men and women equally; ΔE 63.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.15:1WCAG large text: AAA
Contrast with black, large text2.58:1WCAG large text: Fail

Named colours

Slate blue · ΔE 11.7Rebecca purple · ΔE 14.2Royal blue · ΔE 17.6Dark slateblue · ΔE 18.8Midnight blue · ΔE 20.2Medium slateblue · ΔE 20.7
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 11.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ACAE40
Analogous#4075AE, #7940AE
Triadic#AE4240, #40AE42
Split complementary#AE7940, #75AE40
Tetradic#AE4075, #ACAE40, #40AE79

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CECDED
Lighter +30%#A9A8DF
Lighter +20%#8483D1
Lighter +10%#5F5DC4
Darker −10%#343289
Darker −20%#262563
Darker −30%#18173E
Darker −40%#090919
More saturated +25%#2522CC
Less saturated −25%#5F5E90

Channel breakdown

R66
G64
B174
Red66 (25.9%)
Green64 (25.1%)
Blue174 (68.2%)
Hue241.09°
Saturation (HSL)46.22%
Lightness46.67%
Dominant channelBlue
Hex per channelR 42 · G 40 · B AE

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Every value on this page was computed from “4240ae” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.