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Recognised as Colour

#383FA1

  • #383FA1
  • Blue
  • Dark
  • Nearest: Dark slateblue

#383FA1 is a blue with RGB values 56, 63, 161 and HSL 236°, 48%, 43%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#383FA1#383FA1
HEX#383FA1
RGBrgb(56, 63, 161)
RGB (0–1)0.2196, 0.2471, 0.6314
RGB percentages22%, 24.7%, 63.1%
HSLhsl(236, 48.4%, 42.5%)
HSV / HSBhsv(236, 65.2%, 63.1%)
CMYK65.2%, 60.9%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,686,305
CSS custom property--colour: #383FA1;

Brightness & contrast

Relative luminance0.06969WCAG 2.x, 0 is black and 1 is white
Perceived brightness78.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.77:1
Contrast with white8.77:1WCAG normal text: AAA
Contrast with black2.39:1WCAG normal text: Fail
Greyscale equivalent#454545
Inverted#C7C05E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FA4no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#00469Fno green cones; the most common form, about 1% of men; ΔE 10.8 from the original
Tritanopia#00576Ano blue cones; rare, and affects men and women equally; ΔE 57.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.77:1WCAG large text: AAA
Contrast with black, large text2.39:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.4Rebecca purple · ΔE 15.6Slate blue · ΔE 15.7Midnight blue · ΔE 16.7Royal blue · ΔE 19.8Medium purple · ΔE 24.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A19A38
Analogous#3874A1, #6638A1
Triadic#A1383F, #3FA138
Split complementary#A16638, #73A138
Tetradic#A13873, #A19A38, #38A165

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BDC0E8
Lighter +30%#979CDB
Lighter +20%#7177CE
Lighter +10%#4B53C1
Darker −10%#2B307B
Darker −20%#1E2155
Darker −30%#11132F
Darker −40%#03040A
More saturated +25%#1D27BC
Less saturated −25%#535786

Channel breakdown

R56
G63
B161
Red56 (22%)
Green63 (24.7%)
Blue161 (63.1%)
Hue236°
Saturation (HSL)48.39%
Lightness42.55%
Dominant channelBlue
Hex per channelR 38 · G 3F · B A1

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Every value on this page was computed from “383fa1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.