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Colour

#645C61

  • #645C61
  • Grey
  • Dark
  • Nearest: Dim grey

#645C61 is a grey with RGB values 100, 92, 97 and HSL 323°, 4%, 38%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#645C61#645C61
HEX#645C61
RGBrgb(100, 92, 97)
RGB (0–1)0.3922, 0.3608, 0.3804
RGB percentages39.2%, 36.1%, 38%
HSLhsl(322.5, 4.2%, 37.6%)
HSV / HSBhsv(322.5, 8%, 39.2%)
CMYK0%, 8%, 3%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,577,249
CSS custom property--colour: #645C61;

Brightness & contrast

Relative luminance0.11227WCAG 2.x, 0 is black and 1 is white
Perceived brightness95 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.47:1
Contrast with white6.47:1WCAG normal text: AA
Contrast with black3.25:1WCAG normal text: Fail
Greyscale equivalent#5E5E5E
Inverted#9BA39E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5C5D61no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#5E5F61no green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#655C5Eno blue cones; rare, and affects men and women equally; ΔE 1.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.47:1WCAG large text: AAA
Contrast with black, large text3.25:1WCAG large text: AA

Named colours

Dim grey · ΔE 6.4Gray · ΔE 14.4Slate grey · ΔE 16.9Dark slate grey · ΔE 18.3Light slate grey · ΔE 19.6Rosy brown · ΔE 28.1
Nearest named CSS colourDim grey (#696969)ΔE 6.36, clearly different but related
Hue familygrey
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C645F
Analogous#635C64, #645C5D
Triadic#61645C, #5C6164
Split complementary#5D645C, #5C6463
Tetradic#64635C, #5C645F, #5C5D64

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8C4C7
Lighter +30%#B0A9AD
Lighter +20%#988F94
Lighter +10%#7F747B
Darker −10%#494447
Darker −20%#2F2B2D
Darker −30%#141314
Darker −40%#000000
More saturated +25%#7C4467
Less saturated −25%#606060

Channel breakdown

R100
G92
B97
Red100 (39.2%)
Green92 (36.1%)
Blue97 (38%)
Hue322.5°
Saturation (HSL)4.17%
Lightness37.65%
Dominant channelRed
Hex per channelR 64 · G 5C · B 61

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Every value on this page was computed from “645c61” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.