Recognised as Colour

#AD2B1A

#AD2B1A
Red
Dark
Nearest: Firebrick

#AD2B1A is a red with RGB values 173, 43, 26 and HSL 7°, 74%, 39%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#AD2B1A#AD2B1A

HEX#AD2B1A

RGBrgb(173, 43, 26)

RGB (0–1)0.6784, 0.1686, 0.102

RGB percentages67.8%, 16.9%, 10.2%

HSLhsl(6.9, 73.9%, 39%)

HSV / HSBhsv(6.9, 85%, 67.8%)

CMYK0%, 75.1%, 85%, 32.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,348,762

CSS custom property--colour: #AD2B1A;

Brightness & contrast

Relative luminance0.10687WCAG 2.x, 0 is black and 1 is white

Perceived brightness100.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.69:1

Contrast with white6.69:1WCAG normal text: AA

Contrast with black3.14:1WCAG normal text: Fail

Greyscale equivalent#454545

Inverted#52D4E5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#534A16no red cones; affects about 1% of men; ΔE 56 from the original

Deuteranopia#736612no green cones; the most common form, about 1% of men; ΔE 55.8 from the original

Tritanopia#BF0029no blue cones; rare, and affects men and women equally; ΔE 15.1 from the original

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

Contrast with white, large text6.69:1WCAG large text: AAA

Contrast with black, large text3.14:1WCAG large text: AA

Named colours

Firebrick · ΔE 6 Dark red · ΔE 11 Brown · ΔE 11.2 Maroon · ΔE 14.3 Crimson · ΔE 22.6 Sienna · ΔE 23.3

Nearest named CSS colourFirebrick (#B22222)ΔE 5.96, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#1A9CAD

Analogous#AD1A52, #AD751A

Triadic#1AAD2B, #2B1AAD

Split complementary#1AAD75, #1A52AD

Tetradic#52AD1A, #1A9CAD, #751AAD

Tints, shades & saturation

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

Lighter +40%#F1ABA2

Lighter +30%#EA8376

Lighter +20%#E45B49

Lighter +10%#D93621

Darker −10%#812013

Darker −20%#54150D

Darker −30%#280A06

Darker −40%#000000

More saturated +25%#C61801

Less saturated −25%#943E33

Channel breakdown

R173

G43

B26

Red173 (67.8%)

Green43 (16.9%)

Blue26 (10.2%)

Hue6.94°

Saturation (HSL)73.87%

Lightness39.02%

Dominant channelRed

Hex per channelR AD · G 2B · B 1A

Keep nerding

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

#AD2B1A

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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