Recognised as Colour

#640B10

#640B10
Red
Dark
Nearest: Maroon

#640B10 is a red with RGB values 100, 11, 16 and HSL 357°, 80%, 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

#640B10#640B10

HEX#640B10

RGBrgb(100, 11, 16)

RGB (0–1)0.3922, 0.0431, 0.0627

RGB percentages39.2%, 4.3%, 6.3%

HSLhsl(356.6, 80.2%, 21.8%)

HSV / HSBhsv(356.6, 89%, 39.2%)

CMYK0%, 89%, 84%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,556,432

CSS custom property--colour: #640B10;

Brightness & contrast

Relative luminance0.02986WCAG 2.x, 0 is black and 1 is white

Perceived brightness55.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.15:1

Contrast with white13.15:1WCAG normal text: AAA

Contrast with black1.6:1WCAG normal text: Fail

Greyscale equivalent#1E1E1E

Inverted#9BF4EF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#29240Fno red cones; affects about 1% of men; ΔE 40.6 from the original

Deuteranopia#3E370Cno green cones; the most common form, about 1% of men; ΔE 40.9 from the original

Tritanopia#6F000Eno blue cones; rare, and affects men and women equally; ΔE 7 from the original

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

Contrast with white, large text13.15:1WCAG large text: AAA

Contrast with black, large text1.6:1WCAG large text: Fail

Named colours

Maroon · ΔE 18.7 Brown · ΔE 22.3 Dark red · ΔE 23.7 Saddle brown · ΔE 27.4 Sienna · ΔE 28.1 Firebrick · ΔE 29.9

Nearest named CSS colourMaroon (#800000)ΔE 18.72, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B645F

Analogous#640B3D, #64330B

Triadic#10640B, #0B1064

Split complementary#0B6433, #0B3D64

Tetradic#3C640B, #0B645F, #320B64

Tints, shades & saturation

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

Lighter +40%#EC4F58

Lighter +30%#E7212C

Lighter +20%#C0151F

Lighter +10%#921017

Darker −10%#360609

Darker −20%#080101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#6F0006

Less saturated −25%#56191C

Channel breakdown

R100

G11

B16

Red100 (39.2%)

Green11 (4.3%)

Blue16 (6.3%)

Hue356.63°

Saturation (HSL)80.18%

Lightness21.76%

Dominant channelRed

Hex per channelR 64 · G 0B · B 10

Keep nerding

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

#640B10

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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