Recognised as Colour

#A30400

#A30400
Red
Dark
Nearest: Dark red

#A30400 is a red with RGB values 163, 4, 0 and HSL 1°, 100%, 32%. It is a dark colour, so white text on it reaches 8.2:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#A30400#A30400

HEX#A30400

RGBrgb(163, 4, 0)

RGB (0–1)0.6392, 0.0157, 0

RGB percentages63.9%, 1.6%, 0%

HSLhsl(1.5, 100%, 32%)

HSV / HSBhsv(1.5, 100%, 63.9%)

CMYK0%, 97.5%, 100%, 36.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer10,683,392

CSS custom property--colour: #A30400;

Brightness & contrast

Relative luminance0.07873WCAG 2.x, 0 is black and 1 is white

Perceived brightness89.2 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 8.16:1

Contrast with white8.16:1WCAG normal text: AAA

Contrast with black2.57:1WCAG normal text: Fail

Greyscale equivalent#262626

Inverted#5CFBFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#443A00no red cones; affects about 1% of men; ΔE 61.3 from the original

Deuteranopia#675A00no green cones; the most common form, about 1% of men; ΔE 60.6 from the original

Tritanopia#B50008no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original

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

Contrast with white, large text8.16:1WCAG large text: AAA

Contrast with black, large text2.57:1WCAG large text: Fail

Named colours

Dark red · ΔE 10.4 Firebrick · ΔE 11.5 Maroon · ΔE 15.4 Brown · ΔE 19 Crimson · ΔE 24.1 Tomato · ΔE 28.5

Nearest named CSS colourDark red (#8B0000)ΔE 10.37, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#009FA3

Analogous#A3004E, #A35600

Triadic#00A304, #0400A3

Split complementary#00A355, #004EA3

Tetradic#4DA300, #009FA3, #5500A3

Tints, shades & saturation

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

Lighter +40%#FF7470

Lighter +30%#FF423D

Lighter +20%#FF100A

Lighter +10%#D60500

Darker −10%#700300

Darker −20%#3D0100

Darker −30%#0A0000

Darker −40%#000000

More saturated +25%#A30400

Less saturated −25%#8F1714

Channel breakdown

R163

Red163 (63.9%)

Green4 (1.6%)

Blue0 (0%)

Hue1.47°

Saturation (HSL)100%

Lightness31.96%

Dominant channelRed

Hex per channelR A3 · G 04 · B 00

Keep nerding

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

#A30400

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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