Recognised as Colour

#A0171A

#A0171A
Red
Dark
Nearest: Firebrick

#A0171A is a red with RGB values 160, 23, 26 and HSL 359°, 75%, 36%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A0171A#A0171A

HEX#A0171A

RGBrgb(160, 23, 26)

RGB (0–1)0.6275, 0.0902, 0.102

RGB percentages62.7%, 9%, 10.2%

HSLhsl(358.7, 74.9%, 35.9%)

HSV / HSBhsv(358.7, 85.6%, 62.7%)

CMYK0%, 85.6%, 83.8%, 37.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,491,674

CSS custom property--colour: #A0171A;

Brightness & contrast

Relative luminance0.08161WCAG 2.x, 0 is black and 1 is white

Perceived brightness89.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.98:1

Contrast with white7.98:1WCAG normal text: AAA

Contrast with black2.63:1WCAG normal text: Fail

Greyscale equivalent#343434

Inverted#5FE8E5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#463E18no red cones; affects about 1% of men; ΔE 57.3 from the original

Deuteranopia#665B12no green cones; the most common form, about 1% of men; ΔE 57.7 from the original

Tritanopia#B1001Bno blue cones; rare, and affects men and women equally; ΔE 9 from the original

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

Contrast with white, large text7.98:1WCAG large text: AAA

Contrast with black, large text2.63:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.7 Brown · ΔE 7.4 Dark red · ΔE 8.4 Maroon · ΔE 10.4 Crimson · ΔE 21.9 Indian red · ΔE 25.1

Nearest named CSS colourFirebrick (#B22222)ΔE 5.69, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#17A09D

Analogous#A0175F, #A05817

Triadic#1AA017, #171AA0

Split complementary#17A058, #175FA0

Tetradic#5FA017, #17A09D, #5817A0

Tints, shades & saturation

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

Lighter +40%#F09395

Lighter +30%#E9676A

Lighter +20%#E33A3E

Lighter +10%#CD1D21

Darker −10%#731113

Darker −20%#470A0C

Darker −30%#1A0404

Darker −40%#000000

More saturated +25%#B70004

Less saturated −25%#892E30

Channel breakdown

R160

G23

B26

Red160 (62.7%)

Green23 (9%)

Blue26 (10.2%)

Hue358.69°

Saturation (HSL)74.86%

Lightness35.88%

Dominant channelRed

Hex per channelR A0 · G 17 · B 1A

Keep nerding

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

#A0171A

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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