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Recognised as Colour

#47556B

  • #47556B
  • Blue
  • Dark
  • Nearest: Dark slate grey

#47556B is a blue with RGB values 71, 85, 107 and HSL 217°, 20%, 35%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#47556B#47556B
HEX#47556B
RGBrgb(71, 85, 107)
RGB (0–1)0.2784, 0.3333, 0.4196
RGB percentages27.8%, 33.3%, 42%
HSLhsl(216.7, 20.2%, 34.9%)
HSV / HSBhsv(216.7, 33.6%, 42%)
CMYK33.6%, 20.6%, 0%, 58%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,674,923
CSS custom property--colour: #47556B;

Brightness & contrast

Relative luminance0.08898WCAG 2.x, 0 is black and 1 is white
Perceived brightness84 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.55:1
Contrast with white7.55:1WCAG normal text: AAA
Contrast with black2.78:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#B8AA94

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4D566Cno red cones; affects about 1% of men; ΔE 1.9 from the original
Deuteranopia#4A536Bno green cones; the most common form, about 1% of men; ΔE 2.4 from the original
Tritanopia#3C5A5Cno blue cones; rare, and affects men and women equally; ΔE 14.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.55:1WCAG large text: AAA
Contrast with black, large text2.78:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.8Dim grey · ΔE 16.8Slate grey · ΔE 17.7Light slate grey · ΔE 20.6Gray · ΔE 22.9Steel blue · ΔE 24.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.77, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6B5D47
Analogous#47676B, #4B476B
Triadic#6B4755, #556B47
Split complementary#6B4B47, #676B47
Tetradic#6B4767, #6B5D47, #476B4B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2BCCC
Lighter +30%#93A1B8
Lighter +20%#7587A3
Lighter +10%#5B6D8A
Darker −10%#333D4C
Darker −20%#1E242E
Darker −30%#0A0C0F
Darker −40%#000000
More saturated +25%#315081
Less saturated −25%#595959

Channel breakdown

R71
G85
B107
Red71 (27.8%)
Green85 (33.3%)
Blue107 (42%)
Hue216.67°
Saturation (HSL)20.22%
Lightness34.9%
Dominant channelBlue
Hex per channelR 47 · G 55 · B 6B

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Every value on this page was computed from “47556b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.