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Recognised as Colour

#556F63

  • #556F63
  • Cyan
  • Dark
  • Nearest: Dim grey

#556F63 is a cyan with RGB values 85, 111, 99 and HSL 152°, 13%, 38%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#556F63#556F63
HEX#556F63
RGBrgb(85, 111, 99)
RGB (0–1)0.3333, 0.4353, 0.3882
RGB percentages33.3%, 43.5%, 38.8%
HSLhsl(152.3, 13.3%, 38.4%)
HSV / HSBhsv(152.3, 23.4%, 43.5%)
CMYK23.4%, 0%, 10.8%, 56.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,599,075
CSS custom property--colour: #556F63;

Brightness & contrast

Relative luminance0.14201WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.47:1
Contrast with white5.47:1WCAG normal text: AA
Contrast with black3.84:1WCAG normal text: Fail
Greyscale equivalent#696969
Inverted#AA909C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E6B62no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#696864no green cones; the most common form, about 1% of men; ΔE 11.9 from the original
Tritanopia#506F6Bno blue cones; rare, and affects men and women equally; ΔE 5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.47:1WCAG large text: AAA
Contrast with black, large text3.84:1WCAG large text: AA

Named colours

Dim grey · ΔE 12.8Dark slate grey · ΔE 15.1Gray · ΔE 15.7Slate grey · ΔE 19.3Teal · ΔE 20.8Light slate grey · ΔE 21.1
Nearest named CSS colourDim grey (#696969)ΔE 12.77, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6F5561
Analogous#556F56, #556E6F
Triadic#63556F, #6F6355
Split complementary#6F556E, #6F5655
Tetradic#56556F, #6F5561, #6E6F55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C1CFC9
Lighter +30%#A4B9AF
Lighter +20%#87A396
Lighter +10%#6B8C7D
Darker −10%#3F5249
Darker −20%#29352F
Darker −30%#131816
Darker −40%#000000
More saturated +25%#3C8865
Less saturated −25%#626262

Channel breakdown

R85
G111
B99
Red85 (33.3%)
Green111 (43.5%)
Blue99 (38.8%)
Hue152.31°
Saturation (HSL)13.27%
Lightness38.43%
Dominant channelGreen
Hex per channelR 55 · G 6F · B 63

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Every value on this page was computed from “556f63” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.