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Recognised as Colour

#55B6DA

  • #55B6DA
  • Cyan
  • Dark
  • Nearest: Sky blue

#55B6DA is a cyan with RGB values 85, 182, 218 and HSL 196°, 64%, 59%. It is a dark colour, so black text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#55B6DA#55B6DA
HEX#55B6DA
RGBrgb(85, 182, 218)
RGB (0–1)0.3333, 0.7137, 0.8549
RGB percentages33.3%, 71.4%, 85.5%
HSLhsl(196.2, 64.3%, 59.4%)
HSV / HSBhsv(196.2, 61%, 85.5%)
CMYK61%, 16.5%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,617,370
CSS custom property--colour: #55B6DA;

Brightness & contrast

Relative luminance0.40449WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.09:1
Contrast with white2.31:1WCAG normal text: Fail
Contrast with black9.09:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#AA4925

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A2B2DCno red cones; affects about 1% of men; ΔE 22.2 from the original
Deuteranopia#8FA4DAno green cones; the most common form, about 1% of men; ΔE 23.7 from the original
Tritanopia#00C1C2no blue cones; rare, and affects men and women equally; ΔE 25.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.31:1WCAG large text: Fail
Contrast with black, large text9.09:1WCAG large text: AAA

Named colours

Sky blue · ΔE 11.3Light skyblue · ΔE 12.3Deep skyblue · ΔE 16.1Cadetblue · ΔE 21.1Light blue · ΔE 21.8Light steelblue · ΔE 22
Nearest named CSS colourSky blue (#87CEEB)ΔE 11.27, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DA7955
Analogous#55DABC, #5573DA
Triadic#DA55B6, #B6DA55
Split complementary#DA5573, #DABC55
Tetradic#BC55DA, #DA7955, #73DA55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFEFE
Lighter +30%#D3ECF5
Lighter +20%#A9DAEC
Lighter +10%#7FC8E3
Darker −10%#2DA3CF
Darker −20%#2482A5
Darker −30%#1B617B
Darker −40%#124051
More saturated +25%#3BC2F4
Less saturated −25%#6FAAC0

Channel breakdown

R85
G182
B218
Red85 (33.3%)
Green182 (71.4%)
Blue218 (85.5%)
Hue196.24°
Saturation (HSL)64.25%
Lightness59.41%
Dominant channelBlue
Hex per channelR 55 · G B6 · B DA

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Every value on this page was computed from “55b6da” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.