Recognised as Colour

#AD0400

#AD0400
Red
Dark
Nearest: Firebrick

#AD0400 is a red with RGB values 173, 4, 0 and HSL 1°, 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

#AD0400#AD0400

HEX#AD0400

RGBrgb(173, 4, 0)

RGB (0–1)0.6784, 0.0157, 0

RGB percentages67.8%, 1.6%, 0%

HSLhsl(1.4, 100%, 33.9%)

HSV / HSBhsv(1.4, 100%, 67.8%)

CMYK0%, 97.7%, 100%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,338,752

CSS custom property--colour: #AD0400;

Brightness & contrast

Relative luminance0.08971WCAG 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 7.52:1

Contrast with white7.52:1WCAG normal text: AAA

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

Greyscale equivalent#282828

Inverted#52FBFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#483E00no red cones; affects about 1% of men; ΔE 64.5 from the original

Deuteranopia#6E6000no green cones; the most common form, about 1% of men; ΔE 63.3 from the original

Tritanopia#C00009no blue cones; rare, and affects men and women equally; ΔE 6.8 from the original

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

Contrast with white, large text7.52:1WCAG large text: AAA

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

Named colours

Firebrick · ΔE 13.4 Dark red · ΔE 14.5 Maroon · ΔE 19.6 Brown · ΔE 22 Crimson · ΔE 23.1 Tomato · ΔE 26.6

Nearest named CSS colourFirebrick (#B22222)ΔE 13.4, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A9AD

Analogous#AD0052, #AD5B00

Triadic#00AD04, #0400AD

Split complementary#00AD5B, #0052AD

Tetradic#53AD00, #00A9AD, #5B00AD

Tints, shades & saturation

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

Lighter +40%#FF7D7A

Lighter +30%#FF4B47

Lighter +20%#FF1914

Lighter +10%#E00500

Darker −10%#7A0300

Darker −20%#470200

Darker −30%#140000

Darker −40%#000000

More saturated +25%#AD0400

Less saturated −25%#971916

Channel breakdown

R173

Red173 (67.8%)

Green4 (1.6%)

Blue0 (0%)

Hue1.39°

Saturation (HSL)100%

Lightness33.92%

Dominant channelRed

Hex per channelR AD · G 04 · B 00

Keep nerding

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

#AD0400

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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