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Recognised as Colour

#3F83AD

  • #3F83AD
  • Blue
  • Dark
  • Nearest: Steel blue

#3F83AD is a blue with RGB values 63, 131, 173 and HSL 203°, 47%, 46%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F83AD#3F83AD
HEX#3F83AD
RGBrgb(63, 131, 173)
RGB (0–1)0.2471, 0.5137, 0.6784
RGB percentages24.7%, 51.4%, 67.8%
HSLhsl(202.9, 46.6%, 46.3%)
HSV / HSBhsv(202.9, 63.6%, 67.8%)
CMYK63.6%, 24.3%, 0%, 32.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,162,477
CSS custom property--colour: #3F83AD;

Brightness & contrast

Relative luminance0.20306WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.06:1
Contrast with white4.15:1WCAG normal text: Fail
Contrast with black5.06:1WCAG normal text: AA
Greyscale equivalent#787878
Inverted#C07C52

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7083AFno red cones; affects about 1% of men; ΔE 13.1 from the original
Deuteranopia#6178ACno green cones; the most common form, about 1% of men; ΔE 14.1 from the original
Tritanopia#008E91no blue cones; rare, and affects men and women equally; ΔE 28.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.15:1WCAG large text: AA
Contrast with black, large text5.06:1WCAG large text: AAA

Named colours

Steel blue · ΔE 5.5Light slate grey · ΔE 18.9Slate grey · ΔE 19.1Cadetblue · ΔE 25.7Deep skyblue · ΔE 26.4Light skyblue · ΔE 27.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 5.55, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AD693F
Analogous#3FADA0, #3F4CAD
Triadic#AD3F83, #83AD3F
Split complementary#AD3F4C, #ADA03F
Tetradic#A03FAD, #AD693F, #4CAD3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCE0EC
Lighter +30%#A6C9DF
Lighter +20%#81B2D1
Lighter +10%#5C9CC3
Darker −10%#316788
Darker −20%#244A62
Darker −30%#162E3D
Darker −40%#091217
More saturated +25%#218ACB
Less saturated −25%#5D7C8F

Channel breakdown

R63
G131
B173
Red63 (24.7%)
Green131 (51.4%)
Blue173 (67.8%)
Hue202.91°
Saturation (HSL)46.61%
Lightness46.27%
Dominant channelBlue
Hex per channelR 3F · G 83 · B AD

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Every value on this page was computed from “3f83ad” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.