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Recognised as Colour

#643D57

  • #643D57
  • Magenta
  • Dark
  • Nearest: Dim grey

#643D57 is a magenta with RGB values 100, 61, 87 and HSL 320°, 24%, 32%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#643D57#643D57
HEX#643D57
RGBrgb(100, 61, 87)
RGB (0–1)0.3922, 0.2392, 0.3412
RGB percentages39.2%, 23.9%, 34.1%
HSLhsl(320, 24.2%, 31.6%)
HSV / HSBhsv(320, 39%, 39.2%)
CMYK0%, 39%, 13%, 60.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,569,303
CSS custom property--colour: #643D57;

Brightness & contrast

Relative luminance0.06735WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.95:1
Contrast with white8.95:1WCAG normal text: AAA
Contrast with black2.35:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#9BC2A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3F4658no red cones; affects about 1% of men; ΔE 19.9 from the original
Deuteranopia#484C56no green cones; the most common form, about 1% of men; ΔE 20.8 from the original
Tritanopia#683E46no blue cones; rare, and affects men and women equally; ΔE 11.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.95:1WCAG large text: AAA
Contrast with black, large text2.35:1WCAG large text: Fail

Named colours

Dim grey · ΔE 26.5Slate grey · ΔE 32.1Gray · ΔE 32.1Dark slate grey · ΔE 33.5Dark slateblue · ΔE 34Light slate grey · ΔE 34.3
Nearest named CSS colourDim grey (#696969)ΔE 26.55, a distinctly different colour
Hue familymagenta
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3D644A
Analogous#5D3D64, #643D44
Triadic#57643D, #3D5764
Split complementary#44643D, #3D645E
Tetradic#645E3D, #3D644A, #3D4364

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C8A5BC
Lighter +30%#B585A5
Lighter +20%#A1668D
Lighter +10%#845073
Darker −10%#442A3B
Darker −20%#251620
Darker −30%#050304
Darker −40%#000000
More saturated +25%#78295E
Less saturated −25%#515151

Channel breakdown

R100
G61
B87
Red100 (39.2%)
Green61 (23.9%)
Blue87 (34.1%)
Hue320°
Saturation (HSL)24.22%
Lightness31.57%
Dominant channelRed
Hex per channelR 64 · G 3D · B 57

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Every value on this page was computed from “643d57” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.