Recognised as Colour

#A80717

#A80717
Red
Dark
Nearest: Firebrick

#A80717 is a red with RGB values 168, 7, 23 and HSL 354°, 92%, 34%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A80717#A80717

HEX#A80717

RGBrgb(168, 7, 23)

RGB (0–1)0.6588, 0.0275, 0.0902

RGB percentages65.9%, 2.7%, 9%

HSLhsl(354, 92%, 34.3%)

HSV / HSBhsv(354, 95.8%, 65.9%)

CMYK0%, 95.8%, 86.3%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,011,863

CSS custom property--colour: #A80717;

Brightness & contrast

Relative luminance0.08539WCAG 2.x, 0 is black and 1 is white

Perceived brightness92.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.76:1

Contrast with white7.76:1WCAG normal text: AAA

Contrast with black2.71:1WCAG normal text: Fail

Greyscale equivalent#2A2A2A

Inverted#57F8E8

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#453D15no red cones; affects about 1% of men; ΔE 62.6 from the original

Deuteranopia#6A5E0Cno green cones; the most common form, about 1% of men; ΔE 62.5 from the original

Tritanopia#BA0012no blue cones; rare, and affects men and women equally; ΔE 9.5 from the original

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

Contrast with white, large text7.76:1WCAG large text: AAA

Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Firebrick · ΔE 4.8 Dark red · ΔE 10.2 Brown · ΔE 12.2 Maroon · ΔE 13.9 Crimson · ΔE 18.4 Tomato · ΔE 28.1

Nearest named CSS colourFirebrick (#B22222)ΔE 4.8, a close match

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#07A898

Analogous#A80768, #A84707

Triadic#17A807, #0717A8

Split complementary#07A847, #0768A8

Tetradic#68A807, #07A898, #4707A8

Tints, shades & saturation

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

Lighter +40%#FA818D

Lighter +30%#F85061

Lighter +20%#F61F35

Lighter +10%#D9091E

Darker −10%#770510

Darker −20%#46030A

Darker −30%#150103

Darker −40%#000000

More saturated +25%#AF0011

Less saturated −25%#921D29

Channel breakdown

R168

B23

Red168 (65.9%)

Green7 (2.7%)

Blue23 (9%)

Hue354.04°

Saturation (HSL)92%

Lightness34.31%

Dominant channelRed

Hex per channelR A8 · G 07 · B 17

Keep nerding

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

#A80717

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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