Colour

#73001E

#73001E
Red
Dark
Nearest: Brown

#73001E is a red with RGB values 115, 0, 30 and HSL 344°, 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 Brown.

Colour values

#73001E#73001E

HEX#73001E

RGBrgb(115, 0, 30)

RGB (0–1)0.451, 0, 0.1176

RGB percentages45.1%, 0%, 11.8%

HSLhsl(344.3, 100%, 22.5%)

HSV / HSBhsv(344.3, 100%, 45.1%)

CMYK0%, 100%, 73.9%, 54.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer7,536,670

CSS custom property--colour: #73001E;

Brightness & contrast

Relative luminance0.03739WCAG 2.x, 0 is black and 1 is white

Perceived brightness63.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.02:1

Contrast with white12.02:1WCAG normal text: AAA

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

Greyscale equivalent#1B1B1B

Inverted#8CFFE1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2A281Eno red cones; affects about 1% of men; ΔE 48.4 from the original

Deuteranopia#453E1Ano green cones; the most common form, about 1% of men; ΔE 48.2 from the original

Tritanopia#7F000Fno blue cones; rare, and affects men and women equally; ΔE 13.7 from the original

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

Contrast with white, large text12.02:1WCAG large text: AAA

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

Named colours

Brown · ΔE 19.7 Maroon · ΔE 20.2 Dark red · ΔE 24.3 Firebrick · ΔE 27.5 Indian red · ΔE 30.9 Sienna · ΔE 31.6

Nearest named CSS colourBrown (#A52A2A)ΔE 19.67, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#007355

Analogous#730058, #731B00

Triadic#1E7300, #001E73

Split complementary#00731B, #005873

Tetradic#587300, #007355, #1B0073

Tints, shades & saturation

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

Lighter +40%#FF4072

Lighter +30%#FF0D4C

Lighter +20%#D90039

Lighter +10%#A6002B

Darker −10%#400011

Darker −20%#0D0003

Darker −30%#000000

Darker −40%#000000

More saturated +25%#73001E

Less saturated −25%#650E25

Channel breakdown

R115

B30

Red115 (45.1%)

Green0 (0%)

Blue30 (11.8%)

Hue344.35°

Saturation (HSL)100%

Lightness22.55%

Dominant channelRed

Hex per channelR 73 · G 00 · B 1E

Keep nerding

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#73001E

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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