Recognised as Colour

#AC3A1F

#AC3A1F
Red
Dark
Nearest: Firebrick

#AC3A1F is a red with RGB values 172, 58, 31 and HSL 11°, 69%, 40%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#AC3A1F#AC3A1F

HEX#AC3A1F

RGBrgb(172, 58, 31)

RGB (0–1)0.6745, 0.2275, 0.1216

RGB percentages67.5%, 22.7%, 12.2%

HSLhsl(11.5, 69.5%, 39.8%)

HSV / HSBhsv(11.5, 82%, 67.5%)

CMYK0%, 66.3%, 82%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,287,071

CSS custom property--colour: #AC3A1F;

Brightness & contrast

Relative luminance0.11896WCAG 2.x, 0 is black and 1 is white

Perceived brightness104.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.21:1

Contrast with white6.21:1WCAG normal text: AA

Contrast with black3.38:1WCAG normal text: Fail

Greyscale equivalent#505050

Inverted#53C5E0

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5B511Bno red cones; affects about 1% of men; ΔE 49.6 from the original

Deuteranopia#776A1Ano green cones; the most common form, about 1% of men; ΔE 49.7 from the original

Tritanopia#BE1835no blue cones; rare, and affects men and women equally; ΔE 20.6 from the original

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

Contrast with white, large text6.21:1WCAG large text: AAA

Contrast with black, large text3.38:1WCAG large text: AA

Named colours

Firebrick · ΔE 11.3 Brown · ΔE 11.7 Dark red · ΔE 14.2 Maroon · ΔE 16 Sienna · ΔE 17 Saddle brown · ΔE 19.2

Nearest named CSS colourFirebrick (#B22222)ΔE 11.25, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1F91AC

Analogous#AC1F4B, #AC811F

Triadic#1FAC3A, #3A1FAC

Split complementary#1FAC81, #1F4BAC

Tetradic#4AAC1F, #1F91AC, #811FAC

Tints, shades & saturation

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

Lighter +40%#EFB5A8

Lighter +30%#E7917D

Lighter +20%#E06D51

Lighter +10%#D74927

Darker −10%#812B17

Darker −20%#561D0F

Darker −30%#2A0E08

Darker −40%#000000

More saturated +25%#C52A06

Less saturated −25%#934A38

Channel breakdown

R172

G58

B31

Red172 (67.5%)

Green58 (22.7%)

Blue31 (12.2%)

Hue11.49°

Saturation (HSL)69.46%

Lightness39.8%

Dominant channelRed

Hex per channelR AC · G 3A · B 1F

Keep nerding

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

#AC3A1F

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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