Recognised as Colour

#A5001A

#A5001A
Red
Dark
Nearest: Firebrick

#A5001A is a red with RGB values 165, 0, 26 and HSL 351°, 100%, 32%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Firebrick.

Colour values

#A5001A#A5001A

HEX#A5001A

RGBrgb(165, 0, 26)

RGB (0–1)0.6471, 0, 0.102

RGB percentages64.7%, 0%, 10.2%

HSLhsl(350.5, 100%, 32.4%)

HSV / HSBhsv(350.5, 100%, 64.7%)

CMYK0%, 100%, 84.2%, 35.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,813,466

CSS custom property--colour: #A5001A;

Brightness & contrast

Relative luminance0.08074WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.03:1

Contrast with white8.03:1WCAG normal text: AAA

Contrast with black2.61:1WCAG normal text: Fail

Greyscale equivalent#252525

Inverted#5AFFE5

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#423B18no red cones; affects about 1% of men; ΔE 62.8 from the original

Deuteranopia#675C11no green cones; the most common form, about 1% of men; ΔE 62.9 from the original

Tritanopia#B6000Fno blue cones; rare, and affects men and women equally; ΔE 11.4 from the original

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

Contrast with white, large text8.03:1WCAG large text: AAA

Contrast with black, large text2.61:1WCAG large text: Fail

Named colours

Firebrick · ΔE 5.6 Dark red · ΔE 10.6 Brown · ΔE 10.9 Maroon · ΔE 13.5 Crimson · ΔE 18.3 Indian red · ΔE 27.5

Nearest named CSS colourFirebrick (#B22222)ΔE 5.64, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00A58B

Analogous#A5006D, #A53900

Triadic#1AA500, #001AA5

Split complementary#00A539, #006DA5

Tetradic#6CA500, #00A58B, #3800A5

Tints, shades & saturation

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

Lighter +40%#FF7288

Lighter +30%#FF3F5D

Lighter +20%#FF0C32

Lighter +10%#D80022

Darker −10%#720012

Darker −20%#3F000A

Darker −30%#0C0002

Darker −40%#000000

More saturated +25%#A5001A

Less saturated −25%#901528

Channel breakdown

R165

B26

Red165 (64.7%)

Green0 (0%)

Blue26 (10.2%)

Hue350.55°

Saturation (HSL)100%

Lightness32.35%

Dominant channelRed

Hex per channelR A5 · G 00 · B 1A

Keep nerding

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

#A5001A

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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