Colour

#73001C

#73001C
Red
Dark
Nearest: Maroon

#73001C is a red with RGB values 115, 0, 28 and HSL 345°, 100%, 23%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#73001C#73001C

HEX#73001C

RGBrgb(115, 0, 28)

RGB (0–1)0.451, 0, 0.1098

RGB percentages45.1%, 0%, 11%

HSLhsl(345.4, 100%, 22.5%)

HSV / HSBhsv(345.4, 100%, 45.1%)

CMYK0%, 100%, 75.7%, 54.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,536,668

CSS custom property--colour: #73001C;

Brightness & contrast

Relative luminance0.03729WCAG 2.x, 0 is black and 1 is white

Perceived brightness63.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.03:1

Contrast with white12.03:1WCAG normal text: AAA

Contrast with black1.75:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#8CFFE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2B281Cno red cones; affects about 1% of men; ΔE 48.1 from the original

Deuteranopia#453E18no green cones; the most common form, about 1% of men; ΔE 48.3 from the original

Tritanopia#7F000Eno blue cones; rare, and affects men and women equally; ΔE 12.9 from the original

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

Contrast with white, large text12.03:1WCAG large text: AAA

Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Maroon · ΔE 18.9 Brown · ΔE 18.9 Dark red · ΔE 23.1 Firebrick · ΔE 26.6 Indian red · ΔE 30.7 Sienna · ΔE 30.9

Nearest named CSS colourMaroon (#800000)ΔE 18.89, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#007357

Analogous#730056, #731D00

Triadic#1C7300, #001C73

Split complementary#00731D, #005673

Tetradic#567300, #007357, #1D0073

Tints, shades & saturation

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

Lighter +40%#FF406F

Lighter +30%#FF0D48

Lighter +20%#D90035

Lighter +10%#A60028

Darker −10%#400010

Darker −20%#0D0003

Darker −30%#000000

Darker −40%#000000

More saturated +25%#73001C

Less saturated −25%#650E23

Channel breakdown

R115

B28

Red115 (45.1%)

Green0 (0%)

Blue28 (11%)

Hue345.39°

Saturation (HSL)100%

Lightness22.55%

Dominant channelRed

Hex per channelR 73 · G 00 · B 1C

Keep nerding

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#73001C

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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