Recognised as Colour

#D73309

#D73309
Red
Dark
Nearest: Orange red

#D73309 is a red with RGB values 215, 51, 9 and HSL 12°, 92%, 44%. It is a dark colour, so white text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Orange red.

Colour values

#D73309#D73309

HEX#D73309

RGBrgb(215, 51, 9)

RGB (0–1)0.8431, 0.2, 0.0353

RGB percentages84.3%, 20%, 3.5%

HSLhsl(12.2, 92%, 43.9%)

HSV / HSBhsv(12.2, 95.8%, 84.3%)

CMYK0%, 76.3%, 95.8%, 15.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer14,103,305

CSS custom property--colour: #D73309;

Brightness & contrast

Relative luminance0.16834WCAG 2.x, 0 is black and 1 is white

Perceived brightness123.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 4.81:1

Contrast with white4.81:1WCAG normal text: AA

Contrast with black4.37:1WCAG normal text: Fail

Greyscale equivalent#535353

Inverted#28CCF6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#685B00no red cones; affects about 1% of men; ΔE 67 from the original

Deuteranopia#907F00no green cones; the most common form, about 1% of men; ΔE 66.6 from the original

Tritanopia#ED002Eno blue cones; rare, and affects men and women equally; ΔE 19.4 from the original

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

Contrast with white, large text4.81:1WCAG large text: AAA

Contrast with black, large text4.37:1WCAG large text: AA

Named colours

Orange red · ΔE 15.8 Tomato · ΔE 18.6 Red · ΔE 21.4 Firebrick · ΔE 22.9 Chocolate · ΔE 25.7 Crimson · ΔE 26.1

Nearest named CSS colourOrange red (#FF4500)ΔE 15.85, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#09ADD7

Analogous#D70946, #D79A09

Triadic#09D733, #3309D7

Split complementary#09D79A, #0946D7

Tetradic#46D709, #09ADD7, #9A09D7

Tints, shades & saturation

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

Lighter +40%#FCC0B0

Lighter +30%#FA987F

Lighter +20%#F8714E

Lighter +10%#F64A1D

Darker −10%#A62707

Darker −20%#751C05

Darker −30%#441003

Darker −40%#130501

More saturated +25%#E02E00

Less saturated −25%#BB4425

Channel breakdown

R215

G51

Red215 (84.3%)

Green51 (20%)

Blue9 (3.5%)

Hue12.23°

Saturation (HSL)91.96%

Lightness43.92%

Dominant channelRed

Hex per channelR D7 · G 33 · B 09

Keep nerding

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

#D73309

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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