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Colour

#40519D

  • #40519D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#40519D is a blue with RGB values 64, 81, 157 and HSL 229°, 42%, 43%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#40519D#40519D
HEX#40519D
RGBrgb(64, 81, 157)
RGB (0–1)0.251, 0.3176, 0.6157
RGB percentages25.1%, 31.8%, 61.6%
HSLhsl(229, 42.1%, 43.3%)
HSV / HSBhsv(229, 59.2%, 61.6%)
CMYK59.2%, 48.4%, 0%, 38.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,215,197
CSS custom property--colour: #40519D;

Brightness & contrast

Relative luminance0.09409WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.29:1
Contrast with white7.29:1WCAG normal text: AAA
Contrast with black2.88:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#BFAE62

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C5BA0no red cones; affects about 1% of men; ΔE 9.4 from the original
Deuteranopia#1E539Bno green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#00626Fno blue cones; rare, and affects men and women equally; ΔE 46.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.29:1WCAG large text: AAA
Contrast with black, large text2.88:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 10.7Slate blue · ΔE 25.1Royal blue · ΔE 26Midnight blue · ΔE 26.1Rebecca purple · ΔE 26.1Cornflower blue · ΔE 27
Nearest named CSS colourDark slateblue (#483D8B)ΔE 10.68, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9D8C40
Analogous#40809D, #5D409D
Triadic#9D4051, #519D40
Split complementary#9D5D40, #809D40
Tetradic#9D4080, #9D8C40, #409D5D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3C9E6
Lighter +30%#9EA9D8
Lighter +20%#7A89C9
Lighter +10%#5668BA
Darker −10%#313E79
Darker −20%#222C55
Darker −30%#141930
Darker −40%#05060C
More saturated +25%#243FB9
Less saturated −25%#5C6381

Channel breakdown

R64
G81
B157
Red64 (25.1%)
Green81 (31.8%)
Blue157 (61.6%)
Hue229.03°
Saturation (HSL)42.08%
Lightness43.33%
Dominant channelBlue
Hex per channelR 40 · G 51 · B 9D

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Every value on this page was computed from “40519d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.