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Recognised as Colour

#1F56FF

  • #1F56FF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#1F56FF is a blue with RGB values 31, 86, 255 and HSL 225°, 100%, 56%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#1F56FF#1F56FF
HEX#1F56FF
RGBrgb(31, 86, 255)
RGB (0–1)0.1216, 0.3373, 1
RGB percentages12.2%, 33.7%, 100%
HSLhsl(225.3, 100%, 56.1%)
HSV / HSBhsv(225.3, 87.8%, 100%)
CMYK87.8%, 66.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,053,887
CSS custom property--colour: #1F56FF;

Brightness & contrast

Relative luminance0.14167WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.48:1
Contrast with white5.48:1WCAG normal text: AA
Contrast with black3.83:1WCAG normal text: Fail
Greyscale equivalent#575757
Inverted#E0A900

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0074FFno red cones; affects about 1% of men; ΔE 23.9 from the original
Deuteranopia#005FFCno green cones; the most common form, about 1% of men; ΔE 8.7 from the original
Tritanopia#0085A3no blue cones; rare, and affects men and women equally; ΔE 91.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.48:1WCAG large text: AAA
Contrast with black, large text3.83:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 24.1Blue violet · ΔE 27.1Medium blue · ΔE 29Royal blue · ΔE 30.1Slate blue · ΔE 31.5Dark orchid · ΔE 33.5
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 24.06, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC81F
Analogous#1FC6FF, #581FFF
Triadic#FF1F56, #56FF1F
Split complementary#FF581F, #C6FF1F
Tetradic#FF1FC6, #FFC81F, #1FFF58

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF0FF
Lighter +30%#B8C9FF
Lighter +20%#85A3FF
Lighter +10%#527CFF
Darker −10%#003AEB
Darker −20%#002DB8
Darker −30%#002185
Darker −40%#001452
More saturated +25%#1F56FF
Less saturated −25%#3B64E3

Channel breakdown

R31
G86
B255
Red31 (12.2%)
Green86 (33.7%)
Blue255 (100%)
Hue225.27°
Saturation (HSL)100%
Lightness56.08%
Dominant channelBlue
Hex per channelR 1F · G 56 · B FF

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Every value on this page was computed from “1f56ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.