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Recognised as Colour

#556A68

  • #556A68
  • Cyan
  • Dark
  • Nearest: Dim grey

#556A68 is a cyan with RGB values 85, 106, 104 and HSL 174°, 11%, 37%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#556A68#556A68
HEX#556A68
RGBrgb(85, 106, 104)
RGB (0–1)0.3333, 0.4157, 0.4078
RGB percentages33.3%, 41.6%, 40.8%
HSLhsl(174.3, 11%, 37.5%)
HSV / HSBhsv(174.3, 19.8%, 41.6%)
CMYK19.8%, 0%, 1.9%, 58.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,597,800
CSS custom property--colour: #556A68;

Brightness & contrast

Relative luminance0.13239WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.76:1
Contrast with white5.76:1WCAG normal text: AA
Contrast with black3.65:1WCAG normal text: Fail
Greyscale equivalent#656565
Inverted#AA9597

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#686868no red cones; affects about 1% of men; ΔE 8.4 from the original
Deuteranopia#636568no green cones; the most common form, about 1% of men; ΔE 8.1 from the original
Tritanopia#4F6B69no blue cones; rare, and affects men and women equally; ΔE 2.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.76:1WCAG large text: AAA
Contrast with black, large text3.65:1WCAG large text: AA

Named colours

Dim grey · ΔE 8.5Dark slate grey · ΔE 12.6Gray · ΔE 13.4Slate grey · ΔE 14.6Light slate grey · ΔE 17.1Cadetblue · ΔE 22.2
Nearest named CSS colourDim grey (#696969)ΔE 8.49, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6A5557
Analogous#556A5D, #55626A
Triadic#68556A, #6A6855
Split complementary#6A5562, #6A5D55
Tetradic#5D556A, #6A5557, #626A55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFCCCB
Lighter +30%#A3B5B3
Lighter +20%#879E9C
Lighter +10%#6C8684
Darker −10%#3E4E4C
Darker −20%#283130
Darker −30%#111515
Darker −40%#000000
More saturated +25%#3D827B
Less saturated −25%#606060

Channel breakdown

R85
G106
B104
Red85 (33.3%)
Green106 (41.6%)
Blue104 (40.8%)
Hue174.29°
Saturation (HSL)10.99%
Lightness37.45%
Dominant channelGreen
Hex per channelR 55 · G 6A · B 68

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Every value on this page was computed from “556a68” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.