Colour

#643F33

#643F33
Red
Dark
Nearest: Dim grey

#643F33 is a red with RGB values 100, 63, 51 and HSL 15°, 32%, 30%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#643F33#643F33

HEX#643F33

RGBrgb(100, 63, 51)

RGB (0–1)0.3922, 0.2471, 0.2

RGB percentages39.2%, 24.7%, 20%

HSLhsl(14.7, 32.5%, 29.6%)

HSV / HSBhsv(14.7, 49%, 39.2%)

CMYK0%, 37%, 49%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,569,779

CSS custom property--colour: #643F33;

Brightness & contrast

Relative luminance0.06503WCAG 2.x, 0 is black and 1 is white

Perceived brightness74.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.13:1

Contrast with white9.13:1WCAG normal text: AAA

Contrast with black2.3:1WCAG normal text: Fail

Greyscale equivalent#464646

Inverted#9BC0CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#484332no red cones; affects about 1% of men; ΔE 16.1 from the original

Deuteranopia#514B33no green cones; the most common form, about 1% of men; ΔE 16.4 from the original

Tritanopia#6C393Cno blue cones; rare, and affects men and women equally; ΔE 10.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text9.13:1WCAG large text: AAA

Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Dim grey · ΔE 24.5 Sienna · ΔE 29.3 Saddle brown · ΔE 30.2 Gray · ΔE 30.6 Dark slate grey · ΔE 31.8 Rosy brown · ΔE 33.9

Nearest named CSS colourDim grey (#696969)ΔE 24.5, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#335864

Analogous#64333F, #645833

Triadic#33643F, #3F3364

Split complementary#336458, #333F64

Tetradic#3F6433, #335864, #583364

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#CBA598

Lighter +30%#B98777

Lighter +20%#A86A55

Lighter +10%#865444

Darker −10%#422A22

Darker −20%#201411

Darker −30%#000000

Darker −40%#000000

More saturated +25%#773520

Less saturated −25%#514946

Channel breakdown

R100

G63

B51

Red100 (39.2%)

Green63 (24.7%)

Blue51 (20%)

Hue14.69°

Saturation (HSL)32.45%

Lightness29.61%

Dominant channelRed

Hex per channelR 64 · G 3F · B 33

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#643F33

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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