Colour

#AD1826

#AD1826
Red
Dark
Nearest: Firebrick

#AD1826 is a red with RGB values 173, 24, 38 and HSL 354°, 76%, 39%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#AD1826#AD1826

HEX#AD1826

RGBrgb(173, 24, 38)

RGB (0–1)0.6784, 0.0941, 0.149

RGB percentages67.8%, 9.4%, 14.9%

HSLhsl(354.4, 75.6%, 38.6%)

HSV / HSBhsv(354.4, 86.1%, 67.8%)

CMYK0%, 86.1%, 78%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,343,910

CSS custom property--colour: #AD1826;

Brightness & contrast

Relative luminance0.09677WCAG 2.x, 0 is black and 1 is white

Perceived brightness97.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.15:1

Contrast with white7.15:1WCAG normal text: AAA

Contrast with black2.94:1WCAG normal text: Fail

Greyscale equivalent#393939

Inverted#52E7D9

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4A4325no red cones; affects about 1% of men; ΔE 61.3 from the original

Deuteranopia#6E6320no green cones; the most common form, about 1% of men; ΔE 61.6 from the original

Tritanopia#BF0020no 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 text7.15:1WCAG large text: AAA

Contrast with black, large text2.94:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.1 Brown · ΔE 7.8 Dark red · ΔE 13.7 Maroon · ΔE 15.6 Crimson · ΔE 16.9 Indian red · ΔE 23

Nearest named CSS colourFirebrick (#B22222)ΔE 5.06, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#18AD9F

Analogous#AD1870, #AD5518

Triadic#26AD18, #1826AD

Split complementary#18AD55, #1870AD

Tetradic#71AD18, #18AD9F, #5518AD

Tints, shades & saturation

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

Lighter +40%#F29FA7

Lighter +30%#EC727E

Lighter +20%#E54655

Lighter +10%#DA1E30

Darker −10%#80121C

Darker −20%#530C12

Darker −30%#270508

Darker −40%#000000

More saturated +25%#C50013

Less saturated −25%#94313A

Channel breakdown

R173

G24

B38

Red173 (67.8%)

Green24 (9.4%)

Blue38 (14.9%)

Hue354.36°

Saturation (HSL)75.63%

Lightness38.63%

Dominant channelRed

Hex per channelR AD · G 18 · B 26

Keep nerding

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

#AD1826

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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