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Recognised as Colour

#3741AB

  • #3741AB
  • Blue
  • Dark
  • Nearest: Slate blue

#3741AB is a blue with RGB values 55, 65, 171 and HSL 235°, 51%, 44%. It is a dark colour, so white text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#3741AB#3741AB
HEX#3741AB
RGBrgb(55, 65, 171)
RGB (0–1)0.2157, 0.2549, 0.6706
RGB percentages21.6%, 25.5%, 67.1%
HSLhsl(234.8, 51.3%, 44.3%)
HSV / HSBhsv(234.8, 67.8%, 67.1%)
CMYK67.8%, 62%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,621,291
CSS custom property--colour: #3741AB;

Brightness & contrast

Relative luminance0.07533WCAG 2.x, 0 is black and 1 is white
Perceived brightness82 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.38:1
Contrast with white8.38:1WCAG normal text: AAA
Contrast with black2.51:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#C8BE54

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053AEno red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#0048A9no green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#005C6Fno blue cones; rare, and affects men and women equally; ΔE 62.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.38:1WCAG large text: AAA
Contrast with black, large text2.51:1WCAG large text: Fail

Named colours

Slate blue · ΔE 13.3Rebecca purple · ΔE 16Dark slateblue · ΔE 16.9Royal blue · ΔE 17.2Midnight blue · ΔE 19.1Medium slateblue · ΔE 22.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 13.29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ABA137
Analogous#377BAB, #6737AB
Triadic#AB3741, #41AB37
Split complementary#AB6737, #7BAB37
Tetradic#AB377B, #ABA137, #37AB67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2C6EC
Lighter +30%#9CA2DF
Lighter +20%#757DD3
Lighter +10%#4F59C6
Darker −10%#2B3284
Darker −20%#1E245E
Darker −30%#121537
Darker −40%#050611
More saturated +25%#1B2AC7
Less saturated −25%#53588F

Channel breakdown

R55
G65
B171
Red55 (21.6%)
Green65 (25.5%)
Blue171 (67.1%)
Hue234.83°
Saturation (HSL)51.33%
Lightness44.31%
Dominant channelBlue
Hex per channelR 37 · G 41 · B AB

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Every value on this page was computed from “3741ab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.