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Recognised as Colour

#3649A1

  • #3649A1
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3649A1 is a blue with RGB values 54, 73, 161 and HSL 229°, 50%, 42%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3649A1#3649A1
HEX#3649A1
RGBrgb(54, 73, 161)
RGB (0–1)0.2118, 0.2863, 0.6314
RGB percentages21.2%, 28.6%, 63.1%
HSLhsl(229.3, 49.8%, 42.2%)
HSV / HSBhsv(229.3, 66.5%, 63.1%)
CMYK66.5%, 54.7%, 0%, 36.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,557,793
CSS custom property--colour: #3649A1;

Brightness & contrast

Relative luminance0.08123WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8:1
Contrast with white8:1WCAG normal text: AAA
Contrast with black2.62:1WCAG normal text: Fail
Greyscale equivalent#4B4B4B
Inverted#C9B65E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0956A4no red cones; affects about 1% of men; ΔE 12.7 from the original
Deuteranopia#004C9Fno green cones; the most common form, about 1% of men; ΔE 8.1 from the original
Tritanopia#005E6Eno blue cones; rare, and affects men and women equally; ΔE 52.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8:1WCAG large text: AAA
Contrast with black, large text2.62:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 9.5Slate blue · ΔE 19.4Midnight blue · ΔE 20.7Royal blue · ΔE 20.8Rebecca purple · ΔE 21Medium purple · ΔE 25.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 9.51, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A18E36
Analogous#367EA1, #5936A1
Triadic#A13649, #49A136
Split complementary#A15936, #7EA136
Tetradic#A1367E, #A18E36, #36A159

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BBC3E8
Lighter +30%#95A1DB
Lighter +20%#6E80CF
Lighter +10%#485EC2
Darker −10%#29387B
Darker −20%#1C2655
Darker −30%#10152E
Darker −40%#030408
More saturated +25%#1B38BC
Less saturated −25%#515A86

Channel breakdown

R54
G73
B161
Red54 (21.2%)
Green73 (28.6%)
Blue161 (63.1%)
Hue229.35°
Saturation (HSL)49.77%
Lightness42.16%
Dominant channelBlue
Hex per channelR 36 · G 49 · B A1

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Every value on this page was computed from “3649a1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.