Recognised as Colour

#A42C18

#A42C18
Red
Dark
Nearest: Firebrick

#A42C18 is a red with RGB values 164, 44, 24 and HSL 9°, 74%, 37%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A42C18#A42C18

HEX#A42C18

RGBrgb(164, 44, 24)

RGB (0–1)0.6431, 0.1725, 0.0941

RGB percentages64.3%, 17.3%, 9.4%

HSLhsl(8.6, 74.5%, 36.9%)

HSV / HSBhsv(8.6, 85.4%, 64.3%)

CMYK0%, 73.2%, 85.4%, 35.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,759,192

CSS custom property--colour: #A42C18;

Brightness & contrast

Relative luminance0.0976WCAG 2.x, 0 is black and 1 is white

Perceived brightness96.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.11:1

Contrast with white7.11:1WCAG normal text: AAA

Contrast with black2.95:1WCAG normal text: Fail

Greyscale equivalent#444444

Inverted#5BD3E7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#504714no red cones; affects about 1% of men; ΔE 52.4 from the original

Deuteranopia#6E6211no green cones; the most common form, about 1% of men; ΔE 52.6 from the original

Tritanopia#B50029no blue cones; rare, and affects men and women equally; ΔE 16.7 from the original

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

Contrast with white, large text7.11:1WCAG large text: AAA

Contrast with black, large text2.95:1WCAG large text: Fail

Named colours

Firebrick · ΔE 8.5 Dark red · ΔE 9.8 Brown · ΔE 9.9 Maroon · ΔE 12.1 Sienna · ΔE 20.3 Saddle brown · ΔE 21.6

Nearest named CSS colourFirebrick (#B22222)ΔE 8.53, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1890A4

Analogous#A4184A, #A47218

Triadic#18A42C, #2C18A4

Split complementary#18A472, #184AA4

Tetradic#4AA418, #1890A4, #7218A4

Tints, shades & saturation

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

Lighter +40%#F0A598

Lighter +30%#E97E6C

Lighter +20%#E3563F

Lighter +10%#D0381F

Darker −10%#782011

Darker −20%#4B140B

Darker −30%#1F0804

Darker −40%#000000

More saturated +25%#BC1B00

Less saturated −25%#8D3D30

Channel breakdown

R164

G44

B24

Red164 (64.3%)

Green44 (17.3%)

Blue24 (9.4%)

Hue8.57°

Saturation (HSL)74.47%

Lightness36.86%

Dominant channelRed

Hex per channelR A4 · G 2C · B 18

Keep nerding

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

#A42C18

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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