Recognised as Colour

#63281B

#63281B
Red
Dark
Nearest: Saddle brown

#63281B is a red with RGB values 99, 40, 27 and HSL 11°, 57%, 25%. It is a dark colour, so white text on it reaches 11.4:1 contrast (AAA for normal text). The nearest named colour is Saddle brown.

Colour values

#63281B#63281B

HEX#63281B

RGBrgb(99, 40, 27)

RGB (0–1)0.3882, 0.1569, 0.1059

RGB percentages38.8%, 15.7%, 10.6%

HSLhsl(10.8, 57.1%, 24.7%)

HSV / HSBhsv(10.8, 72.7%, 38.8%)

CMYK0%, 59.6%, 72.7%, 61.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,498,331

CSS custom property--colour: #63281B;

Brightness & contrast

Relative luminance0.04249WCAG 2.x, 0 is black and 1 is white

Perceived brightness62.9 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 11.35:1

Contrast with white11.35:1WCAG normal text: AAA

Contrast with black1.85:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#9CD7E4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#38321Ano red cones; affects about 1% of men; ΔE 27.9 from the original

Deuteranopia#463F1Ano green cones; the most common form, about 1% of men; ΔE 28.5 from the original

Tritanopia#6D1C25no blue cones; rare, and affects men and women equally; ΔE 12.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text11.35:1WCAG large text: AAA

Contrast with black, large text1.85:1WCAG large text: Fail

Named colours

Saddle brown · ΔE 23.4 Sienna · ΔE 24.2 Maroon · ΔE 27.8 Brown · ΔE 28.8 Dark red · ΔE 32.3 Indian red · ΔE 34.7

Nearest named CSS colourSaddle brown (#8B4513)ΔE 23.45, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1B5663

Analogous#631B32, #634C1B

Triadic#1B6328, #281B63

Split complementary#1B634C, #1B3263

Tetradic#32631B, #1B5663, #4C1B63

Tints, shades & saturation

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

Lighter +40%#D88472

Lighter +30%#CE6149

Lighter +20%#B34831

Lighter +10%#8B3826

Darker −10%#3B1810

Darker −20%#130805

Darker −30%#000000

Darker −40%#000000

More saturated +25%#731E0B

Less saturated −25%#53322B

Channel breakdown

R99

G40

B27

Red99 (38.8%)

Green40 (15.7%)

Blue27 (10.6%)

Hue10.83°

Saturation (HSL)57.14%

Lightness24.71%

Dominant channelRed

Hex per channelR 63 · G 28 · B 1B

Keep nerding

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

#63281B

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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