Colour

#640B34

#640B34
Red
Dark
Nearest: Brown

#640B34 is a red with RGB values 100, 11, 52 and HSL 332°, 80%, 22%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#640B34#640B34

HEX#640B34

RGBrgb(100, 11, 52)

RGB (0–1)0.3922, 0.0431, 0.2039

RGB percentages39.2%, 4.3%, 20.4%

HSLhsl(332.4, 80.2%, 21.8%)

HSV / HSBhsv(332.4, 89%, 39.2%)

CMYK0%, 89%, 48%, 60.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,556,468

CSS custom property--colour: #640B34;

Brightness & contrast

Relative luminance0.03197WCAG 2.x, 0 is black and 1 is white

Perceived brightness58 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.81:1

Contrast with white12.81:1WCAG normal text: AAA

Contrast with black1.64:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#9BF4CB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#222735no red cones; affects about 1% of men; ΔE 39.9 from the original

Deuteranopia#3A3832no green cones; the most common form, about 1% of men; ΔE 41.1 from the original

Tritanopia#6D001Fno blue cones; rare, and affects men and women equally; ΔE 16.3 from the original

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

Contrast with white, large text12.81:1WCAG large text: AAA

Contrast with black, large text1.64:1WCAG large text: Fail

Named colours

Brown · ΔE 36.4 Maroon · ΔE 39.5 Indian red · ΔE 39.9 Pale violetred · ΔE 40.1 Purple · ΔE 41.6 Medium violet red · ΔE 41.6

Nearest named CSS colourBrown (#A52A2A)ΔE 36.4, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B643B

Analogous#640B61, #640E0B

Triadic#34640B, #0B3464

Split complementary#0B640E, #0B6164

Tetradic#61640B, #0B643B, #0E0B64

Tints, shades & saturation

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

Lighter +40%#EC4F97

Lighter +30%#E7217C

Lighter +20%#C01564

Lighter +10%#92104C

Darker −10%#36061C

Darker −20%#080104

Darker −30%#000000

Darker −40%#000000

More saturated +25%#6F0033

Less saturated −25%#561935

Channel breakdown

R100

G11

B52

Red100 (39.2%)

Green11 (4.3%)

Blue52 (20.4%)

Hue332.36°

Saturation (HSL)80.18%

Lightness21.76%

Dominant channelRed

Hex per channelR 64 · G 0B · B 34

Keep nerding

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

#640B34

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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