Recognised as Colour

#550B25

#550B25
Red
Dark
Nearest: Brown

#550B25 is a red with RGB values 85, 11, 37 and HSL 339°, 77%, 19%. It is a dark colour, so white text on it reaches 14.4:1 contrast (AAA for normal text). The nearest named colour is Brown.

Colour values

#550B25#550B25

HEX#550B25

RGBrgb(85, 11, 37)

RGB (0–1)0.3333, 0.0431, 0.1451

RGB percentages33.3%, 4.3%, 14.5%

HSLhsl(338.9, 77.1%, 18.8%)

HSV / HSBhsv(338.9, 87.1%, 33.3%)

CMYK0%, 87.1%, 56.5%, 66.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer5,573,413

CSS custom property--colour: #550B25;

Brightness & contrast

Relative luminance0.02304WCAG 2.x, 0 is black and 1 is white

Perceived brightness48.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.38:1

Contrast with white14.38:1WCAG normal text: AAA

Contrast with black1.46:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#AAF4DA

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#1F2126no red cones; affects about 1% of men; ΔE 35.3 from the original

Deuteranopia#322F23no green cones; the most common form, about 1% of men; ΔE 35.8 from the original

Tritanopia#5D0017no blue cones; rare, and affects men and women equally; ΔE 11.9 from the original

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

Contrast with white, large text14.38:1WCAG large text: AAA

Contrast with black, large text1.46:1WCAG large text: Fail

Named colours

Brown · ΔE 36.6 Maroon · ΔE 37.3 Black · ΔE 38.7 Sienna · ΔE 41.5 Indian red · ΔE 41.8 Dark red · ΔE 41.9

Nearest named CSS colourBrown (#A52A2A)ΔE 36.56, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B553B

Analogous#550B4A, #55160B

Triadic#25550B, #0B2555

Split complementary#0B5516, #0B4A55

Tetradic#4A550B, #0B553B, #160B55

Tints, shades & saturation

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

Lighter +40%#E7457E

Lighter +30%#DC1D60

Lighter +20%#AF174C

Lighter +10%#821139

Darker −10%#280511

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#600022

Less saturated −25%#491729

Channel breakdown

R85

G11

B37

Red85 (33.3%)

Green11 (4.3%)

Blue37 (14.5%)

Hue338.92°

Saturation (HSL)77.08%

Lightness18.82%

Dominant channelRed

Hex per channelR 55 · G 0B · B 25

Keep nerding

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

#550B25

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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