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Recognised as Colour

#163A74

  • #163A74
  • Blue
  • Dark
  • Nearest: Dark slateblue

#163A74 is a blue with RGB values 22, 58, 116 and HSL 217°, 68%, 27%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#163A74#163A74
HEX#163A74
RGBrgb(22, 58, 116)
RGB (0–1)0.0863, 0.2275, 0.4549
RGB percentages8.6%, 22.7%, 45.5%
HSLhsl(217, 68.1%, 27.1%)
HSV / HSBhsv(217, 81%, 45.5%)
CMYK81%, 50%, 0%, 54.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,456,756
CSS custom property--colour: #163A74;

Brightness & contrast

Relative luminance0.04458WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.1:1
Contrast with white11.1:1WCAG normal text: AAA
Contrast with black1.89:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#E9C58B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#194076no red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#003873no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#004851no blue cones; rare, and affects men and women equally; ΔE 36.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.1:1WCAG large text: AAA
Contrast with black, large text1.89:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.8Midnight blue · ΔE 26.7Steel blue · ΔE 31.1Rebecca purple · ΔE 35.3Cornflower blue · ΔE 38.8Slate blue · ΔE 38.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#745016
Analogous#166974, #211674
Triadic#74163A, #3A7416
Split complementary#742116, #697416
Tetradic#741669, #745016, #167421

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#729EE4
Lighter +30%#4780DC
Lighter +20%#2665CA
Lighter +10%#1E4F9F
Darker −10%#0E2549
Darker −20%#060F1E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#053685
Less saturated −25%#273E63

Channel breakdown

R22
G58
B116
Red22 (8.6%)
Green58 (22.7%)
Blue116 (45.5%)
Hue217.02°
Saturation (HSL)68.12%
Lightness27.06%
Dominant channelBlue
Hex per channelR 16 · G 3A · B 74

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Every value on this page was computed from “163a74” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.