Recognised as Colour

#A10D18

#A10D18
Red
Dark
Nearest: Firebrick

#A10D18 is a red with RGB values 161, 13, 24 and HSL 356°, 85%, 34%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A10D18#A10D18

HEX#A10D18

RGBrgb(161, 13, 24)

RGB (0–1)0.6314, 0.051, 0.0941

RGB percentages63.1%, 5.1%, 9.4%

HSLhsl(355.5, 85.1%, 34.1%)

HSV / HSBhsv(355.5, 91.9%, 63.1%)

CMYK0%, 91.9%, 85.1%, 36.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,554,648

CSS custom property--colour: #A10D18;

Brightness & contrast

Relative luminance0.07931WCAG 2.x, 0 is black and 1 is white

Perceived brightness89 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.12:1

Contrast with white8.12:1WCAG normal text: AAA

Contrast with black2.59:1WCAG normal text: Fail

Greyscale equivalent#2D2D2D

Inverted#5EF2E7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#433C16no red cones; affects about 1% of men; ΔE 60 from the original

Deuteranopia#665A0Fno green cones; the most common form, about 1% of men; ΔE 59.4 from the original

Tritanopia#B20015no blue cones; rare, and affects men and women equally; ΔE 8.9 from the original

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

Contrast with white, large text8.12:1WCAG large text: AAA

Contrast with black, large text2.59:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.4 Dark red · ΔE 8.5 Brown · ΔE 9.3 Maroon · ΔE 11.2 Crimson · ΔE 20.6 Indian red · ΔE 26.7

Nearest named CSS colourFirebrick (#B22222)ΔE 5.35, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0DA196

Analogous#A10D62, #A14C0D

Triadic#18A10D, #0D18A1

Split complementary#0DA14C, #0D62A1

Tetradic#62A10D, #0DA196, #4C0DA1

Tints, shades & saturation

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

Lighter +40%#F5858D

Lighter +30%#F15661

Lighter +20%#EE2635

Lighter +10%#D0111F

Darker −10%#720911

Darker −20%#43050A

Darker −30%#130203

Darker −40%#000000

More saturated +25%#AE000D

Less saturated −25%#8B232B

Channel breakdown

R161

G13

B24

Red161 (63.1%)

Green13 (5.1%)

Blue24 (9.4%)

Hue355.54°

Saturation (HSL)85.06%

Lightness34.12%

Dominant channelRed

Hex per channelR A1 · G 0D · B 18

Keep nerding

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

#A10D18

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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