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Colour

#5557FF

  • #5557FF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#5557FF is a blue with RGB values 85, 87, 255 and HSL 239°, 100%, 67%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#5557FF#5557FF
HEX#5557FF
RGBrgb(85, 87, 255)
RGB (0–1)0.3333, 0.3412, 1
RGB percentages33.3%, 34.1%, 100%
HSLhsl(239.3, 100%, 66.7%)
HSV / HSBhsv(239.3, 66.7%, 100%)
CMYK66.7%, 65.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,593,087
CSS custom property--colour: #5557FF;

Brightness & contrast

Relative luminance0.15968WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.01:1
Contrast with white5.01:1WCAG normal text: AA
Contrast with black4.19:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#AAA800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0077FFno red cones; affects about 1% of men; ΔE 27.5 from the original
Deuteranopia#0067FCno green cones; the most common form, about 1% of men; ΔE 16.9 from the original
Tritanopia#0084A4no blue cones; rare, and affects men and women equally; ΔE 89.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.01:1WCAG large text: AAA
Contrast with black, large text4.19:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 20.8Blue violet · ΔE 22.2Dark orchid · ΔE 28.1Medium blue · ΔE 29Slate blue · ΔE 29.3Royal blue · ΔE 29.9
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.84, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFFD55
Analogous#55ACFF, #A855FF
Triadic#FF5557, #57FF55
Split complementary#FFA855, #ACFF55
Tetradic#FF55AC, #FFFD55, #55FFA8

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EEEEFF
Lighter +20%#BBBCFF
Lighter +10%#8889FF
Darker −10%#2225FF
Darker −20%#0003EE
Darker −30%#0002BB
Darker −40%#000288
More saturated +25%#5557FF
Less saturated −25%#6A6CEA

Channel breakdown

R85
G87
B255
Red85 (33.3%)
Green87 (34.1%)
Blue255 (100%)
Hue239.29°
Saturation (HSL)100%
Lightness66.67%
Dominant channelBlue
Hex per channelR 55 · G 57 · B FF

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Every value on this page was computed from “5557ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.