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Colour

#0055FF

  • #0055FF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#0055FF is a blue with RGB values 0, 85, 255 and HSL 220°, 100%, 50%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#0055FF#0055FF
HEX#0055FF
HEX (short)#05F
RGBrgb(0, 85, 255)
RGB (0–1)0, 0.3333, 1
RGB percentages0%, 33.3%, 100%
HSLhsl(220, 100%, 50%)
HSV / HSBhsv(220, 100%, 100%)
CMYK100%, 66.7%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer22,015
CSS custom property--colour: #0055FF;

Brightness & contrast

Relative luminance0.13717WCAG 2.x, 0 is black and 1 is white
Perceived brightness108 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.61:1
Contrast with white5.61:1WCAG normal text: AA
Contrast with black3.74:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#FFAA00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0073FFno red cones; affects about 1% of men; ΔE 23.6 from the original
Deuteranopia#005DFCno green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#0084A3no blue cones; rare, and affects men and women equally; ΔE 91 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.61:1WCAG large text: AAA
Contrast with black, large text3.74:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 25.2Blue violet · ΔE 27.8Medium blue · ΔE 28.6Royal blue · ΔE 30.8Slate blue · ΔE 32.5Dark orchid · ΔE 34.5
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 25.22, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFAA00
Analogous#00D5FF, #2B00FF
Triadic#FF0055, #55FF00
Split complementary#FF2A00, #D4FF00
Tetradic#FF00D4, #FFAA00, #00FF2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CCDDFF
Lighter +30%#99BBFF
Lighter +20%#6699FF
Lighter +10%#3377FF
Darker −10%#0044CC
Darker −20%#003399
Darker −30%#002266
Darker −40%#001133
More saturated +25%#0055FF
Less saturated −25%#2060DF

Channel breakdown

R0
G85
B255
Red0 (0%)
Green85 (33.3%)
Blue255 (100%)
Hue220°
Saturation (HSL)100%
Lightness50%
Dominant channelBlue
Hex per channelR 00 · G 55 · B FF

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Every value on this page was computed from “0055ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.