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Recognised as Colour

#559CB5

  • #559CB5
  • Cyan
  • Dark
  • Nearest: Cadetblue

#559CB5 is a cyan with RGB values 85, 156, 181 and HSL 196°, 39%, 52%. It is a dark colour, so black text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#559CB5#559CB5
HEX#559CB5
RGBrgb(85, 156, 181)
RGB (0–1)0.3333, 0.6118, 0.7098
RGB percentages33.3%, 61.2%, 71%
HSLhsl(195.6, 39.3%, 52.2%)
HSV / HSBhsv(195.6, 53%, 71%)
CMYK53%, 13.8%, 0%, 29%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,610,677
CSS custom property--colour: #559CB5;

Brightness & contrast

Relative luminance0.29044WCAG 2.x, 0 is black and 1 is white
Perceived brightness142.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.81:1
Contrast with white3.08:1WCAG normal text: Fail
Contrast with black6.81:1WCAG normal text: AA
Greyscale equivalent#8F8F8F
Inverted#AA634A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8E99B6no red cones; affects about 1% of men; ΔE 18.2 from the original
Deuteranopia#808EB5no green cones; the most common form, about 1% of men; ΔE 19.5 from the original
Tritanopia#12A4A4no blue cones; rare, and affects men and women equally; ΔE 21.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.08:1WCAG large text: AA
Contrast with black, large text6.81:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 13.2Light slate grey · ΔE 16.4Slate grey · ΔE 17.9Sky blue · ΔE 18.4Steel blue · ΔE 18.6Dark cyan · ΔE 20.7
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 13.19, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B56E55
Analogous#55B59E, #556CB5
Triadic#B5559C, #9CB555
Split complementary#B5556C, #B59E55
Tetradic#9E55B5, #B56E55, #6CB555

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3EFF3
Lighter +30%#C0DAE3
Lighter +20%#9CC5D4
Lighter +10%#79B1C4
Darker −10%#418096
Darker −20%#326172
Darker −30%#22434F
Darker −40%#13252B
More saturated +25%#37ABD4
Less saturated −25%#748D97

Channel breakdown

R85
G156
B181
Red85 (33.3%)
Green156 (61.2%)
Blue181 (71%)
Hue195.63°
Saturation (HSL)39.34%
Lightness52.16%
Dominant channelBlue
Hex per channelR 55 · G 9C · B B5

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Every value on this page was computed from “559cb5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.