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Recognised as Colour

#503DB8

  • #503DB8
  • Blue
  • Dark
  • Nearest: Slate blue

#503DB8 is a blue with RGB values 80, 61, 184 and HSL 249°, 50%, 48%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#503DB8#503DB8
HEX#503DB8
RGBrgb(80, 61, 184)
RGB (0–1)0.3137, 0.2392, 0.7216
RGB percentages31.4%, 23.9%, 72.2%
HSLhsl(249.3, 50.2%, 48%)
HSV / HSBhsv(249.3, 66.8%, 72.2%)
CMYK56.5%, 66.8%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,258,680
CSS custom property--colour: #503DB8;

Brightness & contrast

Relative luminance0.08504WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.78:1
Contrast with white7.78:1WCAG normal text: AAA
Contrast with black2.7:1WCAG normal text: Fail
Greyscale equivalent#4A4A4A
Inverted#AFC247

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0056BCno red cones; affects about 1% of men; ΔE 22.9 from the original
Deuteranopia#004EB6no green cones; the most common form, about 1% of men; ΔE 19.7 from the original
Tritanopia#1C5C75no blue cones; rare, and affects men and women equally; ΔE 67.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.78:1WCAG large text: AAA
Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Slate blue · ΔE 12.7Rebecca purple · ΔE 15.4Medium slateblue · ΔE 17.4Indigo · ΔE 19.8Royal blue · ΔE 20.4Navy · ΔE 22.9
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 12.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A5B83D
Analogous#3D68B8, #8D3DB8
Triadic#B8503D, #3DB850
Split complementary#B88D3D, #68B83D
Tetradic#B83D68, #A5B83D, #3DB88D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D6D1F0
Lighter +30%#B4ABE3
Lighter +20%#9185D6
Lighter +10%#6F5ECA
Darker −10%#3F3092
Darker −20%#2F246B
Darker −30%#1E1745
Darker −40%#0D0A1F
More saturated +25%#3B1ED7
Less saturated −25%#655C99

Channel breakdown

R80
G61
B184
Red80 (31.4%)
Green61 (23.9%)
Blue184 (72.2%)
Hue249.27°
Saturation (HSL)50.2%
Lightness48.04%
Dominant channelBlue
Hex per channelR 50 · G 3D · B B8

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Every value on this page was computed from “503db8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.