Colour

#A50009

#A50009
Red
Dark
Nearest: Firebrick

#A50009 is a red with RGB values 165, 0, 9 and HSL 357°, 100%, 32%. 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

#A50009#A50009

HEX#A50009

RGBrgb(165, 0, 9)

RGB (0–1)0.6471, 0, 0.0353

RGB percentages64.7%, 0%, 3.5%

HSLhsl(356.7, 100%, 32.4%)

HSV / HSBhsv(356.7, 100%, 64.7%)

CMYK0%, 100%, 94.5%, 35.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,813,449

CSS custom property--colour: #A50009;

Brightness & contrast

Relative luminance0.08019WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.07:1

Contrast with white8.07:1WCAG normal text: AAA

Contrast with black2.6:1WCAG normal text: Fail

Greyscale equivalent#242424

Inverted#5AFFF6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#433B05no red cones; affects about 1% of men; ΔE 63 from the original

Deuteranopia#685B00no green cones; the most common form, about 1% of men; ΔE 61.8 from the original

Tritanopia#B70009no blue cones; rare, and affects men and women equally; ΔE 7.5 from the original

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

Contrast with white, large text8.07:1WCAG large text: AAA

Contrast with black, large text2.6:1WCAG large text: Fail

Named colours

Firebrick · ΔE 8.8 Dark red · ΔE 9.7 Maroon · ΔE 14.6 Brown · ΔE 16.6 Crimson · ΔE 21.4 Tomato · ΔE 28.2

Nearest named CSS colourFirebrick (#B22222)ΔE 8.81, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A59C

Analogous#A5005B, #A54A00

Triadic#09A500, #0009A5

Split complementary#00A54A, #005BA5

Tetradic#5BA500, #00A59C, #4A00A5

Tints, shades & saturation

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

Lighter +40%#FF727A

Lighter +30%#FF3F49

Lighter +20%#FF0C19

Lighter +10%#D8000C

Darker −10%#720006

Darker −20%#3F0003

Darker −30%#0C0001

Darker −40%#000000

More saturated +25%#A50009

Less saturated −25%#90151B

Channel breakdown

R165

Red165 (64.7%)

Green0 (0%)

Blue9 (3.5%)

Hue356.73°

Saturation (HSL)100%

Lightness32.35%

Dominant channelRed

Hex per channelR A5 · G 00 · B 09

Keep nerding

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

#A50009

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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