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Recognised as Colour

#3A4780

  • #3A4780
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3A4780 is a blue with RGB values 58, 71, 128 and HSL 229°, 38%, 36%. It is a dark colour, so white text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3A4780#3A4780
HEX#3A4780
RGBrgb(58, 71, 128)
RGB (0–1)0.2275, 0.2784, 0.502
RGB percentages22.7%, 27.8%, 50.2%
HSLhsl(228.9, 37.6%, 36.5%)
HSV / HSBhsv(228.9, 54.7%, 50.2%)
CMYK54.7%, 44.5%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,819,392
CSS custom property--colour: #3A4780;

Brightness & contrast

Relative luminance0.06965WCAG 2.x, 0 is black and 1 is white
Perceived brightness76.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.78:1
Contrast with white8.78:1WCAG normal text: AAA
Contrast with black2.39:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#C5B87F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2F4E82no red cones; affects about 1% of men; ΔE 6.7 from the original
Deuteranopia#27487Fno green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#19535Dno blue cones; rare, and affects men and women equally; ΔE 35.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.78:1WCAG large text: AAA
Contrast with black, large text2.39:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 15.9Steel blue · ΔE 26.6Midnight blue · ΔE 29.5Rebecca purple · ΔE 33.2Cornflower blue · ΔE 34Slate grey · ΔE 34.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.91, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#80733A
Analogous#3A6A80, #503A80
Triadic#803A47, #47803A
Split complementary#80503A, #6A803A
Tetradic#803A6A, #80733A, #3A8050

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ACB5DA
Lighter +30%#8995CA
Lighter +20%#6676BA
Lighter +10%#4A5AA3
Darker −10%#2A345D
Darker −20%#1A203A
Darker −30%#0A0D17
Darker −40%#000000
More saturated +25%#233897
Less saturated −25%#515669

Channel breakdown

R58
G71
B128
Red58 (22.7%)
Green71 (27.8%)
Blue128 (50.2%)
Hue228.86°
Saturation (HSL)37.63%
Lightness36.47%
Dominant channelBlue
Hex per channelR 3A · G 47 · B 80

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Every value on this page was computed from “3a4780” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.