Colour

#AD1A00

#AD1A00
Red
Dark
Nearest: Firebrick

#AD1A00 is a red with RGB values 173, 26, 0 and HSL 9°, 100%, 34%. 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

#AD1A00#AD1A00

HEX#AD1A00

RGBrgb(173, 26, 0)

RGB (0–1)0.6784, 0.102, 0

RGB percentages67.8%, 10.2%, 0%

HSLhsl(9, 100%, 33.9%)

HSV / HSBhsv(9, 100%, 67.8%)

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

24-bit integer11,344,384

CSS custom property--colour: #AD1A00;

Brightness & contrast

Relative luminance0.09623WCAG 2.x, 0 is black and 1 is white

Perceived brightness96.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.18:1

Contrast with white7.18:1WCAG normal text: AAA

Contrast with black2.92:1WCAG normal text: Fail

Greyscale equivalent#373737

Inverted#52E5FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#4D4300no red cones; affects about 1% of men; ΔE 61 from the original

Deuteranopia#706300no green cones; the most common form, about 1% of men; ΔE 60.5 from the original

Tritanopia#BF0018no 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 text7.18:1WCAG large text: AAA

Contrast with black, large text2.92:1WCAG large text: Fail

Named colours

Firebrick · ΔE 13.3 Dark red · ΔE 14 Maroon · ΔE 18.9 Brown · ΔE 21.1 Crimson · ΔE 24.9 Tomato · ΔE 25.5

Nearest named CSS colourFirebrick (#B22222)ΔE 13.25, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0093AD

Analogous#AD003D, #AD7100

Triadic#00AD1A, #1A00AD

Split complementary#00AD71, #003CAD

Tetradic#3CAD00, #0093AD, #7100AD

Tints, shades & saturation

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

Lighter +40%#FF8E7A

Lighter +30%#FF6347

Lighter +20%#FF3714

Lighter +10%#E02200

Darker −10%#7A1200

Darker −20%#470B00

Darker −30%#140300

Darker −40%#000000

More saturated +25%#AD1A00

Less saturated −25%#972916

Channel breakdown

R173

G26

Red173 (67.8%)

Green26 (10.2%)

Blue0 (0%)

Hue9.02°

Saturation (HSL)100%

Lightness33.92%

Dominant channelRed

Hex per channelR AD · G 1A · B 00

Keep nerding

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

#AD1A00

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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