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Recognised as Colour

#555F8D

  • #555F8D
  • Blue
  • Dark
  • Nearest: Steel blue

#555F8D is a blue with RGB values 85, 95, 141 and HSL 229°, 25%, 44%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#555F8D#555F8D
HEX#555F8D
RGBrgb(85, 95, 141)
RGB (0–1)0.3333, 0.3725, 0.5529
RGB percentages33.3%, 37.3%, 55.3%
HSLhsl(229.3, 24.8%, 44.3%)
HSV / HSBhsv(229.3, 39.7%, 55.3%)
CMYK39.7%, 32.6%, 0%, 44.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,595,021
CSS custom property--colour: #555F8D;

Brightness & contrast

Relative luminance0.12039WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.16:1
Contrast with white6.16:1WCAG normal text: AA
Contrast with black3.41:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#AAA072

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#50648Fno red cones; affects about 1% of men; ΔE 4.2 from the original
Deuteranopia#4B5F8Cno green cones; the most common form, about 1% of men; ΔE 3.3 from the original
Tritanopia#446870no blue cones; rare, and affects men and women equally; ΔE 26.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.16:1WCAG large text: AAA
Contrast with black, large text3.41:1WCAG large text: AA

Named colours

Steel blue · ΔE 17.6Slate grey · ΔE 22.4Light slate grey · ΔE 23.9Dark slateblue · ΔE 25.7Dim grey · ΔE 28.1Gray · ΔE 30.5
Nearest named CSS colourSteel blue (#4682B4)ΔE 17.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8D8355
Analogous#557B8D, #67558D
Triadic#8D555F, #5F8D55
Split complementary#8D6755, #7B8D55
Tetradic#8D557B, #8D8355, #558D67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDD1E1
Lighter +30%#ADB3CE
Lighter +20%#8D96BB
Lighter +10%#6E78A7
Darker −10%#424A6D
Darker −20%#2F344D
Darker −30%#1B1F2E
Darker −40%#08090E
More saturated +25%#394DA9
Less saturated −25%#717171

Channel breakdown

R85
G95
B141
Red85 (33.3%)
Green95 (37.3%)
Blue141 (55.3%)
Hue229.29°
Saturation (HSL)24.78%
Lightness44.31%
Dominant channelBlue
Hex per channelR 55 · G 5F · B 8D

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Every value on this page was computed from “555f8d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.