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Recognised as Colour

#1F4784

  • #1F4784
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1F4784 is a blue with RGB values 31, 71, 132 and HSL 216°, 62%, 32%. 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

#1F4784#1F4784
HEX#1F4784
RGBrgb(31, 71, 132)
RGB (0–1)0.1216, 0.2784, 0.5176
RGB percentages12.2%, 27.8%, 51.8%
HSLhsl(216.2, 62%, 32%)
HSV / HSBhsv(216.2, 76.5%, 51.8%)
CMYK76.5%, 46.2%, 0%, 48.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,049,924
CSS custom property--colour: #1F4784;

Brightness & contrast

Relative luminance0.06464WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.16:1
Contrast with white9.16:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#E0B87B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#284D86no red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#134483no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#00555Fno blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.16:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.7Steel blue · ΔE 26.1Midnight blue · ΔE 29.5Cornflower blue · ΔE 33.2Rebecca purple · ΔE 35.3Royal blue · ΔE 36.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#845C1F
Analogous#1F7A84, #291F84
Triadic#841F47, #47841F
Split complementary#842A1F, #7A841F
Tetradic#841F7A, #845C1F, #1F842A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8BAEE4
Lighter +30%#6292DA
Lighter +20%#3975D0
Lighter +10%#295DAD
Darker −10%#15315B
Darker −20%#0C1B31
Darker −30%#020408
Darker −40%#000000
More saturated +25%#0B4398
Less saturated −25%#334B70

Channel breakdown

R31
G71
B132
Red31 (12.2%)
Green71 (27.8%)
Blue132 (51.8%)
Hue216.24°
Saturation (HSL)61.96%
Lightness31.96%
Dominant channelBlue
Hex per channelR 1F · G 47 · B 84

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Every value on this page was computed from “1f4784” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.