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Colour

#55ACFF

  • #55ACFF
  • Blue
  • Dark
  • Nearest: Cornflower blue

#55ACFF is a blue with RGB values 85, 172, 255 and HSL 209°, 100%, 67%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#55ACFF#55ACFF
HEX#55ACFF
RGBrgb(85, 172, 255)
RGB (0–1)0.3333, 0.6745, 1
RGB percentages33.3%, 67.5%, 100%
HSLhsl(209.3, 100%, 66.7%)
HSV / HSBhsv(209.3, 66.7%, 100%)
CMYK66.7%, 32.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,614,847
CSS custom property--colour: #55ACFF;

Brightness & contrast

Relative luminance0.38656WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.73:1
Contrast with white2.41:1WCAG normal text: Fail
Contrast with black8.73:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#AA5300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#87B0FFno red cones; affects about 1% of men; ΔE 9.9 from the original
Deuteranopia#6FA0FDno green cones; the most common form, about 1% of men; ΔE 11.3 from the original
Tritanopia#00C0CAno blue cones; rare, and affects men and women equally; ΔE 47.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.41:1WCAG large text: Fail
Contrast with black, large text8.73:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12Deep skyblue · ΔE 18.6Dodgerblue · ΔE 20.2Steel blue · ΔE 23.3Light skyblue · ΔE 25.3Sky blue · ΔE 32.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 11.96, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFA855
Analogous#55FFFD, #5557FF
Triadic#FF55AC, #ACFF55
Split complementary#FF5557, #FFFD55
Tetradic#FD55FF, #FFA855, #57FF55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#EEF7FF
Lighter +20%#BBDEFF
Lighter +10%#88C5FF
Darker −10%#2293FF
Darker −20%#007AEE
Darker −30%#0060BB
Darker −40%#004688
More saturated +25%#55ACFF
Less saturated −25%#6AACEA

Channel breakdown

R85
G172
B255
Red85 (33.3%)
Green172 (67.5%)
Blue255 (100%)
Hue209.29°
Saturation (HSL)100%
Lightness66.67%
Dominant channelBlue
Hex per channelR 55 · G AC · B FF

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Every value on this page was computed from “55acff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.