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Colour

#645F56

  • #645F56
  • Grey
  • Dark
  • Nearest: Dim grey

#645F56 is a grey with RGB values 100, 95, 86 and HSL 39°, 8%, 36%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#645F56#645F56
HEX#645F56
RGBrgb(100, 95, 86)
RGB (0–1)0.3922, 0.3725, 0.3373
RGB percentages39.2%, 37.3%, 33.7%
HSLhsl(38.6, 7.5%, 36.5%)
HSV / HSBhsv(38.6, 14%, 39.2%)
CMYK0%, 5%, 14%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,578,006
CSS custom property--colour: #645F56;

Brightness & contrast

Relative luminance0.11566WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.34:1
Contrast with white6.34:1WCAG normal text: AA
Contrast with black3.31:1WCAG normal text: Fail
Greyscale equivalent#5F5F5F
Inverted#9BA0A9

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#615F55no red cones; affects about 1% of men; ΔE 1.5 from the original
Deuteranopia#636056no green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#675D5Cno blue cones; rare, and affects men and women equally; ΔE 5.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.34:1WCAG large text: AAA
Contrast with black, large text3.31:1WCAG large text: AA

Named colours

Dim grey · ΔE 7Gray · ΔE 14.3Dark slate grey · ΔE 17.9Slate grey · ΔE 20.7Light slate grey · ΔE 23.1Rosy brown · ΔE 28.5
Nearest named CSS colourDim grey (#696969)ΔE 7.04, clearly different but related
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#565B64
Analogous#645856, #626456
Triadic#56645F, #5F5664
Split complementary#566264, #585664
Tetradic#566458, #565B64, #645662

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8C4BE
Lighter +30%#B0ABA3
Lighter +20%#989288
Lighter +10%#7F796E
Darker −10%#49453E
Darker −20%#2D2B27
Darker −30%#12110F
Darker −40%#000000
More saturated +25%#7B663F
Less saturated −25%#5D5D5D

Channel breakdown

R100
G95
B86
Red100 (39.2%)
Green95 (37.3%)
Blue86 (33.7%)
Hue38.57°
Saturation (HSL)7.53%
Lightness36.47%
Dominant channelRed
Hex per channelR 64 · G 5F · B 56

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Every value on this page was computed from “645f56” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.