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Recognised as Colour

#555D73

  • #555D73
  • Blue
  • Dark
  • Nearest: Slate grey

#555D73 is a blue with RGB values 85, 93, 115 and HSL 224°, 15%, 39%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#555D73#555D73
HEX#555D73
RGBrgb(85, 93, 115)
RGB (0–1)0.3333, 0.3647, 0.451
RGB percentages33.3%, 36.5%, 45.1%
HSLhsl(224, 15%, 39.2%)
HSV / HSBhsv(224, 26.1%, 45.1%)
CMYK26.1%, 19.1%, 0%, 54.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,594,483
CSS custom property--colour: #555D73;

Brightness & contrast

Relative luminance0.10998WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.56:1
Contrast with white6.56:1WCAG normal text: AA
Contrast with black3.2:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#AAA28C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#565F74no red cones; affects about 1% of men; ΔE 1.1 from the original
Deuteranopia#545C72no green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#4D6164no blue cones; rare, and affects men and women equally; ΔE 13 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.56:1WCAG large text: AAA
Contrast with black, large text3.2:1WCAG large text: AA

Named colours

Slate grey · ΔE 14.3Dim grey · ΔE 14.5Light slate grey · ΔE 17.1Dark slate grey · ΔE 19Gray · ΔE 19.6Steel blue · ΔE 23.6
Nearest named CSS colourSlate grey (#708090)ΔE 14.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#736B55
Analogous#556C73, #5C5573
Triadic#73555D, #5D7355
Split complementary#735C55, #6C7355
Tetradic#73556C, #736B55, #55735C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2C6D2
Lighter +30%#A5ABBC
Lighter +20%#8790A7
Lighter +10%#6B7590
Darker −10%#3F4556
Darker −20%#2A2E38
Darker −30%#14161B
Darker −40%#000000
More saturated +25%#3C518C
Less saturated −25%#646464

Channel breakdown

R85
G93
B115
Red85 (33.3%)
Green93 (36.5%)
Blue115 (45.1%)
Hue224°
Saturation (HSL)15%
Lightness39.22%
Dominant channelBlue
Hex per channelR 55 · G 5D · B 73

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Every value on this page was computed from “555d73” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.