Recognised as Colour

#AC331E

#AC331E
Red
Dark
Nearest: Firebrick

#AC331E is a red with RGB values 172, 51, 30 and HSL 9°, 70%, 40%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#AC331E#AC331E

HEX#AC331E

RGBrgb(172, 51, 30)

RGB (0–1)0.6745, 0.2, 0.1176

RGB percentages67.5%, 20%, 11.8%

HSLhsl(8.9, 70.3%, 39.6%)

HSV / HSBhsv(8.9, 82.6%, 67.5%)

CMYK0%, 70.3%, 82.6%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,285,278

CSS custom property--colour: #AC331E;

Brightness & contrast

Relative luminance0.11232WCAG 2.x, 0 is black and 1 is white

Perceived brightness102.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.47:1

Contrast with white6.47:1WCAG normal text: AA

Contrast with black3.25:1WCAG normal text: Fail

Greyscale equivalent#4B4B4B

Inverted#53CCE1

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#574D1Ano red cones; affects about 1% of men; ΔE 52.3 from the original

Deuteranopia#756818no green cones; the most common form, about 1% of men; ΔE 52.5 from the original

Tritanopia#BE012Fno blue cones; rare, and affects men and women equally; ΔE 19 from the original

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

Contrast with white, large text6.47:1WCAG large text: AAA

Contrast with black, large text3.25:1WCAG large text: AA

Named colours

Firebrick · ΔE 8.2 Brown · ΔE 10.1 Dark red · ΔE 12.3 Maroon · ΔE 14.6 Sienna · ΔE 19.8 Saddle brown · ΔE 21.9

Nearest named CSS colourFirebrick (#B22222)ΔE 8.22, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1E97AC

Analogous#AC1E50, #AC7A1E

Triadic#1EAC33, #331EAC

Split complementary#1EAC7A, #1E50AC

Tetradic#50AC1E, #1E97AC, #7A1EAC

Tints, shades & saturation

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

Lighter +40%#F0B1A6

Lighter +30%#E88B7B

Lighter +20%#E06550

Lighter +10%#D74026

Darker −10%#812616

Darker −20%#55190F

Darker −30%#2A0C07

Darker −40%#000000

More saturated +25%#C52105

Less saturated −25%#934537

Channel breakdown

R172

G51

B30

Red172 (67.5%)

Green51 (20%)

Blue30 (11.8%)

Hue8.87°

Saturation (HSL)70.3%

Lightness39.61%

Dominant channelRed

Hex per channelR AC · G 33 · B 1E

Keep nerding

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

#AC331E

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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