Recognised as Colour

#A40128

#A40128
Red
Dark
Nearest: Brown

#A40128 is a red with RGB values 164, 1, 40 and HSL 346°, 99%, 32%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#A40128#A40128

HEX#A40128

RGBrgb(164, 1, 40)

RGB (0–1)0.6431, 0.0039, 0.1569

RGB percentages64.3%, 0.4%, 15.7%

HSLhsl(345.6, 98.8%, 32.4%)

HSV / HSBhsv(345.6, 99.4%, 64.3%)

CMYK0%, 99.4%, 75.6%, 35.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,748,200

CSS custom property--colour: #A40128;

Brightness & contrast

Relative luminance0.08067WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.04:1

Contrast with white8.04:1WCAG normal text: AAA

Contrast with black2.61:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#5BFED7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#413C28no red cones; affects about 1% of men; ΔE 62.2 from the original

Deuteranopia#665B22no green cones; the most common form, about 1% of men; ΔE 61.9 from the original

Tritanopia#B50017no blue cones; rare, and affects men and women equally; ΔE 15.5 from the original

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

Contrast with white, large text8.04:1WCAG large text: AAA

Contrast with black, large text2.61:1WCAG large text: Fail

Named colours

Brown · ΔE 9.6 Firebrick · ΔE 11.3 Dark red · ΔE 16.5 Maroon · ΔE 16.8 Crimson · ΔE 18.9 Indian red · ΔE 24.2

Nearest named CSS colourBrown (#A52A2A)ΔE 9.65, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#01A47D

Analogous#A4017A, #A42C01

Triadic#28A401, #0128A4

Split complementary#01A42C, #017AA4

Tetradic#79A401, #01A47D, #2B01A4

Tints, shades & saturation

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

Lighter +40%#FE7394

Lighter +30%#FE406E

Lighter +20%#FE0D47

Lighter +10%#D70134

Darker −10%#71011C

Darker −20%#3F000F

Darker −30%#0C0003

Darker −40%#000000

More saturated +25%#A50027

Less saturated −25%#8F1633

Channel breakdown

R164

B40

Red164 (64.3%)

Green1 (0.4%)

Blue40 (15.7%)

Hue345.64°

Saturation (HSL)98.79%

Lightness32.35%

Dominant channelRed

Hex per channelR A4 · G 01 · B 28

Keep nerding

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

#A40128

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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