Colour

#AD001A

#AD001A
Red
Dark
Nearest: Firebrick

#AD001A is a red with RGB values 173, 0, 26 and HSL 351°, 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

#AD001A#AD001A

HEX#AD001A

RGBrgb(173, 0, 26)

RGB (0–1)0.6784, 0, 0.102

RGB percentages67.8%, 0%, 10.2%

HSLhsl(351, 100%, 33.9%)

HSV / HSBhsv(351, 100%, 67.8%)

CMYK0%, 100%, 85%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,337,754

CSS custom property--colour: #AD001A;

Brightness & contrast

Relative luminance0.08959WCAG 2.x, 0 is black and 1 is white

Perceived brightness95 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#272727

Inverted#52FFE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#463E18no red cones; affects about 1% of men; ΔE 64.8 from the original

Deuteranopia#6C6010no green cones; the most common form, about 1% of men; ΔE 64.8 from the original

Tritanopia#BF0010no blue cones; rare, and affects men and women equally; ΔE 11.2 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 5.5 Dark red · ΔE 12.4 Brown · ΔE 13.4 Maroon · ΔE 16 Crimson · ΔE 16.2 Tomato · ΔE 27.5

Nearest named CSS colourFirebrick (#B22222)ΔE 5.5, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00AD93

Analogous#AD0071, #AD3C00

Triadic#1AAD00, #001AAD

Split complementary#00AD3D, #0071AD

Tetradic#71AD00, #00AD93, #3C00AD

Tints, shades & saturation

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

Lighter +40%#FF7A8E

Lighter +30%#FF4763

Lighter +20%#FF1437

Lighter +10%#E00022

Darker −10%#7A0012

Darker −20%#47000B

Darker −30%#140003

Darker −40%#000000

More saturated +25%#AD001A

Less saturated −25%#971629

Channel breakdown

R173

B26

Red173 (67.8%)

Green0 (0%)

Blue26 (10.2%)

Hue350.98°

Saturation (HSL)100%

Lightness33.92%

Dominant channelRed

Hex per channelR AD · G 00 · B 1A

Keep nerding

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

#AD001A

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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