Recognised as Colour

#A40B24

#A40B24
Red
Dark
Nearest: Brown

#A40B24 is a red with RGB values 164, 11, 36 and HSL 350°, 87%, 34%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A40B24#A40B24

HEX#A40B24

RGBrgb(164, 11, 36)

RGB (0–1)0.6431, 0.0431, 0.1412

RGB percentages64.3%, 4.3%, 14.1%

HSLhsl(350.2, 87.4%, 34.3%)

HSV / HSBhsv(350.2, 93.3%, 64.3%)

CMYK0%, 93.3%, 78%, 35.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,750,756

CSS custom property--colour: #A40B24;

Brightness & contrast

Relative luminance0.08259WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.92:1

Contrast with white7.92:1WCAG normal text: AAA

Contrast with black2.65:1WCAG normal text: Fail

Greyscale equivalent#2D2D2D

Inverted#5BF4DB

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#433D23no red cones; affects about 1% of men; ΔE 61 from the original

Deuteranopia#675C1Eno green cones; the most common form, about 1% of men; ΔE 60.8 from the original

Tritanopia#B50019no blue cones; rare, and affects men and women equally; ΔE 12.3 from the original

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

Contrast with white, large text7.92:1WCAG large text: AAA

Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Brown · ΔE 7.8 Firebrick · ΔE 8.3 Dark red · ΔE 13.7 Maroon · ΔE 14.5 Crimson · ΔE 19 Indian red · ΔE 24

Nearest named CSS colourBrown (#A52A2A)ΔE 7.78, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0BA48B

Analogous#A40B70, #A43E0B

Triadic#24A40B, #0B24A4

Split complementary#0BA43E, #0B70A4

Tetradic#71A40B, #0BA48B, #3F0BA4

Tints, shades & saturation

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

Lighter +40%#F78497

Lighter +30%#F4546E

Lighter +20%#F02546

Lighter +10%#D40E2E

Darker −10%#74081A

Darker −20%#44050F

Darker −30%#150105

Darker −40%#000000

More saturated +25%#AF001D

Less saturated −25%#8E2133

Channel breakdown

R164

G11

B36

Red164 (64.3%)

Green11 (4.3%)

Blue36 (14.1%)

Hue350.2°

Saturation (HSL)87.43%

Lightness34.31%

Dominant channelRed

Hex per channelR A4 · G 0B · B 24

Keep nerding

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

#A40B24

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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