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Colour

#193FA3

  • #193FA3
  • Blue
  • Dark
  • Nearest: Dark slateblue

#193FA3 is a blue with RGB values 25, 63, 163 and HSL 223°, 73%, 37%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#193FA3#193FA3
HEX#193FA3
RGBrgb(25, 63, 163)
RGB (0–1)0.098, 0.2471, 0.6392
RGB percentages9.8%, 24.7%, 63.9%
HSLhsl(223.5, 73.4%, 36.9%)
HSV / HSBhsv(223.5, 84.7%, 63.9%)
CMYK84.7%, 61.3%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,654,691
CSS custom property--colour: #193FA3;

Brightness & contrast

Relative luminance0.06406WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.21:1
Contrast with white9.21:1WCAG normal text: AAA
Contrast with black2.28:1WCAG normal text: Fail
Greyscale equivalent#3E3E3E
Inverted#E6C05C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004EA6no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#0041A1no green cones; the most common form, about 1% of men; ΔE 3.7 from the original
Tritanopia#00596Bno blue cones; rare, and affects men and women equally; ΔE 58.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.21:1WCAG large text: AAA
Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.4Midnight blue · ΔE 17.5Slate blue · ΔE 18Royal blue · ΔE 19.1Rebecca purple · ΔE 19.9Medium slateblue · ΔE 27.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.45, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A37D19
Analogous#1984A3, #3819A3
Triadic#A3193F, #3FA319
Split complementary#A33819, #84A319
Tetradic#A31984, #A37D19, #19A338

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#99B1EF
Lighter +30%#6C8FE9
Lighter +20%#406DE2
Lighter +10%#2050CF
Darker −10%#122E77
Darker −20%#0B1D4B
Darker −30%#050C1E
Darker −40%#000000
More saturated +25%#0234BA
Less saturated −25%#314A8B

Channel breakdown

R25
G63
B163
Red25 (9.8%)
Green63 (24.7%)
Blue163 (63.9%)
Hue223.48°
Saturation (HSL)73.4%
Lightness36.86%
Dominant channelBlue
Hex per channelR 19 · G 3F · B A3

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Every value on this page was computed from “193fa3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.