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Recognised as Colour

#3F4CAD

  • #3F4CAD
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3F4CAD is a blue with RGB values 63, 76, 173 and HSL 233°, 47%, 46%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3F4CAD#3F4CAD
HEX#3F4CAD
RGBrgb(63, 76, 173)
RGB (0–1)0.2471, 0.298, 0.6784
RGB percentages24.7%, 29.8%, 67.8%
HSLhsl(232.9, 46.6%, 46.3%)
HSV / HSBhsv(232.9, 63.6%, 67.8%)
CMYK63.6%, 56.1%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,148,397
CSS custom property--colour: #3F4CAD;

Brightness & contrast

Relative luminance0.09243WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.37:1
Contrast with white7.37:1WCAG normal text: AAA
Contrast with black2.85:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#C0B352

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005BB0no red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#0051ABno green cones; the most common form, about 1% of men; ΔE 10.3 from the original
Tritanopia#006375no blue cones; rare, and affects men and women equally; ΔE 56.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.37:1WCAG large text: AAA
Contrast with black, large text2.85:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 12.8Slate blue · ΔE 14.1Royal blue · ΔE 16.3Rebecca purple · ΔE 18.4Medium purple · ΔE 21.7Midnight blue · ΔE 21.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.82, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ADA03F
Analogous#3F83AD, #693FAD
Triadic#AD3F4C, #4CAD3F
Split complementary#AD693F, #83AD3F
Tetradic#AD3F83, #ADA03F, #3FAD69

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCD0EC
Lighter +30%#A6ADDF
Lighter +20%#818AD1
Lighter +10%#5C68C3
Darker −10%#313C88
Darker −20%#242B62
Darker −30%#161B3D
Darker −40%#090A17
More saturated +25%#2135CB
Less saturated −25%#5D638F

Channel breakdown

R63
G76
B173
Red63 (24.7%)
Green76 (29.8%)
Blue173 (67.8%)
Hue232.91°
Saturation (HSL)46.61%
Lightness46.27%
Dominant channelBlue
Hex per channelR 3F · G 4C · B AD

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Every value on this page was computed from “3f4cad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.