Recognised as Colour

#643A33

#643A33
Red
Dark
Nearest: Dim grey

#643A33 is a red with RGB values 100, 58, 51 and HSL 9°, 32%, 30%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#643A33#643A33

HEX#643A33

RGBrgb(100, 58, 51)

RGB (0–1)0.3922, 0.2275, 0.2

RGB percentages39.2%, 22.7%, 20%

HSLhsl(8.6, 32.5%, 29.6%)

HSV / HSBhsv(8.6, 49%, 39.2%)

CMYK0%, 42%, 49%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,568,499

CSS custom property--colour: #643A33;

Brightness & contrast

Relative luminance0.05974WCAG 2.x, 0 is black and 1 is white

Perceived brightness72.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 9.57:1

Contrast with white9.57:1WCAG normal text: AAA

Contrast with black2.19:1WCAG normal text: Fail

Greyscale equivalent#424242

Inverted#9BC5CC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#444032no red cones; affects about 1% of men; ΔE 19.1 from the original

Deuteranopia#4E4932no green cones; the most common form, about 1% of men; ΔE 19.9 from the original

Tritanopia#6C3438no blue cones; rare, and affects men and women equally; ΔE 8.2 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text9.57:1WCAG large text: AAA

Contrast with black, large text2.19:1WCAG large text: Fail

Named colours

Dim grey · ΔE 26.3 Sienna · ΔE 29.8 Saddle brown · ΔE 31.1 Gray · ΔE 32.4 Dark slate grey · ΔE 33.6 Rosy brown · ΔE 34.7

Nearest named CSS colourDim grey (#696969)ΔE 26.29, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#335D64

Analogous#643345, #645233

Triadic#33643A, #3A3364

Split complementary#336452, #334564

Tetradic#456433, #335D64, #523364

Tints, shades & saturation

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

Lighter +40%#CBA098

Lighter +30%#B98077

Lighter +20%#A86155

Lighter +10%#864E44

Darker −10%#422622

Darker −20%#201311

Darker −30%#000000

Darker −40%#000000

More saturated +25%#772D20

Less saturated −25%#514746

Channel breakdown

R100

G58

B51

Red100 (39.2%)

Green58 (22.7%)

Blue51 (20%)

Hue8.57°

Saturation (HSL)32.45%

Lightness29.61%

Dominant channelRed

Hex per channelR 64 · G 3A · B 33

Keep nerding

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

#643A33

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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