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Recognised as Colour

#66655B

  • #66655B
  • Grey
  • Dark
  • Nearest: Dim grey

#66655B is a grey with RGB values 102, 101, 91 and HSL 55°, 6%, 38%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#66655B#66655B
HEX#66655B
RGBrgb(102, 101, 91)
RGB (0–1)0.4, 0.3961, 0.3569
RGB percentages40%, 39.6%, 35.7%
HSLhsl(54.5, 5.7%, 37.8%)
HSV / HSBhsv(54.5, 10.8%, 40%)
CMYK0%, 1%, 10.8%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,710,619
CSS custom property--colour: #66655B;

Brightness & contrast

Relative luminance0.12887WCAG 2.x, 0 is black and 1 is white
Perceived brightness100.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.87:1
Contrast with white5.87:1WCAG normal text: AA
Contrast with black3.58:1WCAG normal text: Fail
Greyscale equivalent#646464
Inverted#999AA4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#67645Ano red cones; affects about 1% of men; ΔE 0.9 from the original
Deuteranopia#67655Bno green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#686462no blue cones; rare, and affects men and women equally; ΔE 4.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.87:1WCAG large text: AAA
Contrast with black, large text3.58:1WCAG large text: AA

Named colours

Dim grey · ΔE 6.3Gray · ΔE 12.5Dark slate grey · ΔE 18Slate grey · ΔE 19.3Light slate grey · ΔE 21.5Dark grey · ΔE 27.3
Nearest named CSS colourDim grey (#696969)ΔE 6.28, clearly different but related
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5B5C66
Analogous#665F5B, #62665B
Triadic#5B6665, #655B66
Split complementary#5B6266, #5F5B66
Tetradic#5B665F, #5B5C66, #665B62

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CAC9C3
Lighter +30%#B2B1A8
Lighter +20%#9A998D
Lighter +10%#818073
Darker −10%#4B4A43
Darker −20%#30302B
Darker −30%#151513
Darker −40%#000000
More saturated +25%#7E7943
Less saturated −25%#616161

Channel breakdown

R102
G101
B91
Red102 (40%)
Green101 (39.6%)
Blue91 (35.7%)
Hue54.55°
Saturation (HSL)5.7%
Lightness37.84%
Dominant channelRed
Hex per channelR 66 · G 65 · B 5B

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Every value on this page was computed from “66655b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.