Colour

#AD0020

#AD0020
Red
Dark
Nearest: Firebrick

#AD0020 is a red with RGB values 173, 0, 32 and HSL 349°, 100%, 34%. 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

#AD0020#AD0020

HEX#AD0020

RGBrgb(173, 0, 32)

RGB (0–1)0.6784, 0, 0.1255

RGB percentages67.8%, 0%, 12.5%

HSLhsl(348.9, 100%, 33.9%)

HSV / HSBhsv(348.9, 100%, 67.8%)

CMYK0%, 100%, 81.5%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,337,760

CSS custom property--colour: #AD0020;

Brightness & contrast

Relative luminance0.08989WCAG 2.x, 0 is black and 1 is white

Perceived brightness95.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.51:1

Contrast with white7.51:1WCAG normal text: AAA

Contrast with black2.8:1WCAG normal text: Fail

Greyscale equivalent#272727

Inverted#52FFDF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#463F1Fno red cones; affects about 1% of men; ΔE 64.9 from the original

Deuteranopia#6C6018no green cones; the most common form, about 1% of men; ΔE 64.6 from the original

Tritanopia#BF0013no blue cones; rare, and affects men and women equally; ΔE 13 from the original

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

Contrast with white, large text7.51:1WCAG large text: AAA

Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Firebrick · ΔE 6 Brown · ΔE 11.8 Dark red · ΔE 13.7 Crimson · ΔE 15.3 Maroon · ΔE 16.4 Indian red · ΔE 26.8

Nearest named CSS colourFirebrick (#B22222)ΔE 5.99, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00AD8D

Analogous#AD0076, #AD3600

Triadic#20AD00, #0020AD

Split complementary#00AD36, #0077AD

Tetradic#77AD00, #00AD8D, #3700AD

Tints, shades & saturation

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

Lighter +40%#FF7A93

Lighter +30%#FF4769

Lighter +20%#FF143F

Lighter +10%#E00029

Darker −10%#7A0017

Darker −20%#47000D

Darker −30%#140004

Darker −40%#000000

More saturated +25%#AD0020

Less saturated −25%#97162E

Channel breakdown

R173

B32

Red173 (67.8%)

Green0 (0%)

Blue32 (12.5%)

Hue348.9°

Saturation (HSL)100%

Lightness33.92%

Dominant channelRed

Hex per channelR AD · G 00 · B 20

Keep nerding

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#AD0020

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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