Recognised as Colour

#AC041C

#AC041C
Red
Dark
Nearest: Firebrick

#AC041C is a red with RGB values 172, 4, 28 and HSL 351°, 95%, 35%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#AC041C#AC041C

HEX#AC041C

RGBrgb(172, 4, 28)

RGB (0–1)0.6745, 0.0157, 0.1098

RGB percentages67.5%, 1.6%, 11%

HSLhsl(351.4, 95.5%, 34.5%)

HSV / HSBhsv(351.4, 97.7%, 67.5%)

CMYK0%, 97.7%, 83.7%, 32.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,273,244

CSS custom property--colour: #AC041C;

Brightness & contrast

Relative luminance0.08941WCAG 2.x, 0 is black and 1 is white

Perceived brightness94.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.53:1

Contrast with white7.53:1WCAG normal text: AAA

Contrast with black2.79:1WCAG normal text: Fail

Greyscale equivalent#292929

Inverted#53FBE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#463F1Ano red cones; affects about 1% of men; ΔE 64.4 from the original

Deuteranopia#6C6013no green cones; the most common form, about 1% of men; ΔE 64 from the original

Tritanopia#BE0013no blue cones; rare, and affects men and women equally; ΔE 11.1 from the original

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

Contrast with white, large text7.53:1WCAG large text: AAA

Contrast with black, large text2.79:1WCAG large text: Fail

Named colours

Firebrick · ΔE 4.9 Brown · ΔE 12.2 Dark red · ΔE 12.2 Maroon · ΔE 15.5 Crimson · ΔE 16.4 Indian red · ΔE 27.5

Nearest named CSS colourFirebrick (#B22222)ΔE 4.9, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#04AC94

Analogous#AC0470, #AC4004

Triadic#1CAC04, #041CAC

Split complementary#04AC40, #0470AC

Tetradic#70AC04, #04AC94, #4004AC

Tints, shades & saturation

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

Lighter +40%#FC8092

Lighter +30%#FB4E67

Lighter +20%#FA1C3C

Lighter +10%#DE0524

Darker −10%#7A0314

Darker −20%#48020C

Darker −30%#160104

Darker −40%#000000

More saturated +25%#B00019

Less saturated −25%#961A2C

Channel breakdown

R172

B28

Red172 (67.5%)

Green4 (1.6%)

Blue28 (11%)

Hue351.43°

Saturation (HSL)95.45%

Lightness34.51%

Dominant channelRed

Hex per channelR AC · G 04 · B 1C

Keep nerding

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

#AC041C

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

Nerdulate something else