Recognised as Colour

#640D0D

#640D0D
Red
Dark
Nearest: Maroon

#640D0D is a red with RGB values 100, 13, 13 and HSL 0°, 77%, 22%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#640D0D#640D0D

HEX#640D0D

RGBrgb(100, 13, 13)

RGB (0–1)0.3922, 0.051, 0.051

RGB percentages39.2%, 5.1%, 5.1%

HSLhsl(0, 77%, 22.2%)

HSV / HSBhsv(0, 87%, 39.2%)

CMYK0%, 87%, 87%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,556,941

CSS custom property--colour: #640D0D;

Brightness & contrast

Relative luminance0.03026WCAG 2.x, 0 is black and 1 is white

Perceived brightness55.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.08:1

Contrast with white13.08:1WCAG normal text: AAA

Contrast with black1.61:1WCAG normal text: Fail

Greyscale equivalent#1F1F1F

Inverted#9BF2F2

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2A250Cno red cones; affects about 1% of men; ΔE 40.3 from the original

Deuteranopia#3F3708no green cones; the most common form, about 1% of men; ΔE 40 from the original

Tritanopia#6F000Fno blue cones; rare, and affects men and women equally; ΔE 6.8 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text13.08:1WCAG large text: AAA

Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Maroon · ΔE 17.7 Brown · ΔE 22.1 Dark red · ΔE 22.7 Saddle brown · ΔE 25.9 Sienna · ΔE 27.1 Firebrick · ΔE 29.4

Nearest named CSS colourMaroon (#800000)ΔE 17.73, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0D6464

Analogous#640D39, #64390D

Triadic#0D640D, #0D0D64

Split complementary#0D6439, #0D3964

Tetradic#39640D, #0D6464, #390D64

Tints, shades & saturation

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

Lighter +40%#E95454

Lighter +30%#E32727

Lighter +20%#BE1919

Lighter +10%#911313

Darker −10%#370707

Darker −20%#0A0101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#710000

Less saturated −25%#561B1B

Channel breakdown

R100

G13

B13

Red100 (39.2%)

Green13 (5.1%)

Blue13 (5.1%)

Hue0°

Saturation (HSL)76.99%

Lightness22.16%

Dominant channelRed

Hex per channelR 64 · G 0D · B 0D

Keep nerding

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

#640D0D

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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