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Recognised as Colour

#666E6C

  • #666E6C
  • Grey
  • Dark
  • Nearest: Dim grey

#666E6C is a grey with RGB values 102, 110, 108 and HSL 165°, 4%, 42%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#666E6C#666E6C
HEX#666E6C
RGBrgb(102, 110, 108)
RGB (0–1)0.4, 0.4314, 0.4235
RGB percentages40%, 43.1%, 42.4%
HSLhsl(165, 3.8%, 41.6%)
HSV / HSBhsv(165, 7.3%, 43.1%)
CMYK7.3%, 0%, 1.8%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,712,940
CSS custom property--colour: #666E6C;

Brightness & contrast

Relative luminance0.15059WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.23:1
Contrast with white5.23:1WCAG normal text: AA
Contrast with black4.01:1WCAG normal text: Fail
Greyscale equivalent#6C6C6C
Inverted#999193

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6D6D6Cno red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#6C6C6Cno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#646E6Dno blue cones; rare, and affects men and women equally; ΔE 1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.23:1WCAG large text: AAA
Contrast with black, large text4.01:1WCAG large text: AA

Named colours

Dim grey · ΔE 3.7Gray · ΔE 8.6Slate grey · ΔE 12.9Light slate grey · ΔE 15.2Dark slate grey · ΔE 17.1Cadetblue · ΔE 23.6
Nearest named CSS colourDim grey (#696969)ΔE 3.7, a close match
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E6668
Analogous#666E68, #666C6E
Triadic#6C666E, #6E6C66
Split complementary#6E666C, #6E6866
Tetradic#68666E, #6E6668, #6C6E66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CED2D1
Lighter +30%#B4B9B8
Lighter +20%#99A19F
Lighter +10%#7F8886
Darker −10%#4D5452
Darker −20%#353938
Darker −30%#1C1F1E
Darker −40%#040404
More saturated +25%#4C8979
Less saturated −25%#6A6A6A

Channel breakdown

R102
G110
B108
Red102 (40%)
Green110 (43.1%)
Blue108 (42.4%)
Hue165°
Saturation (HSL)3.77%
Lightness41.57%
Dominant channelGreen
Hex per channelR 66 · G 6E · B 6C

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Every value on this page was computed from “666e6c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.