Recognised as Colour

#A10308

#A10308
Red
Dark
Nearest: Dark red

#A10308 is a red with RGB values 161, 3, 8 and HSL 358°, 96%, 32%. It is a dark colour, so white text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#A10308#A10308

HEX#A10308

RGBrgb(161, 3, 8)

RGB (0–1)0.6314, 0.0118, 0.0314

RGB percentages63.1%, 1.2%, 3.1%

HSLhsl(358.1, 96.3%, 32.2%)

HSV / HSBhsv(358.1, 98.1%, 63.1%)

CMYK0%, 98.1%, 95%, 36.9%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,552,072

CSS custom property--colour: #A10308;

Brightness & contrast

Relative luminance0.0766WCAG 2.x, 0 is black and 1 is white

Perceived brightness88.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.29:1

Contrast with white8.29:1WCAG normal text: AAA

Contrast with black2.53:1WCAG normal text: Fail

Greyscale equivalent#252525

Inverted#5EFCF7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#423A04no red cones; affects about 1% of men; ΔE 61.5 from the original

Deuteranopia#655900no green cones; the most common form, about 1% of men; ΔE 60.7 from the original

Tritanopia#B2000Ano blue cones; rare, and affects men and women equally; ΔE 6.9 from the original

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

Contrast with white, large text8.29:1WCAG large text: AAA

Contrast with black, large text2.53:1WCAG large text: Fail

Named colours

Dark red · ΔE 8 Firebrick · ΔE 8.7 Maroon · ΔE 12.9 Brown · ΔE 15.7 Crimson · ΔE 22.5 Tomato · ΔE 29.1

Nearest named CSS colourDark red (#8B0000)ΔE 8.03, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#03A19C

Analogous#A10357, #A14D03

Triadic#08A103, #0308A1

Split complementary#03A14D, #0357A1

Tetradic#57A103, #03A19C, #4D03A1

Tints, shades & saturation

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

Lighter +40%#FC7478

Lighter +30%#FB4247

Lighter +20%#FB0F17

Lighter +10%#D3040A

Darker −10%#6F0206

Darker −20%#3D0103

Darker −30%#0B0001

Darker −40%#000000

More saturated +25%#A40005

Less saturated −25%#8C181B

Channel breakdown

R161

Red161 (63.1%)

Green3 (1.2%)

Blue8 (3.1%)

Hue358.1°

Saturation (HSL)96.34%

Lightness32.16%

Dominant channelRed

Hex per channelR A1 · G 03 · B 08

Keep nerding

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

#A10308

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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