Recognised as Colour
#A30109
- #A30109
- Red
- Dark
- Nearest: Firebrick
#A30109 is a red with RGB values 163, 1, 9 and HSL 357°, 99%, 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 Firebrick.
Colour values
#A30109#A30109
HEX#A30109
RGBrgb(163, 1, 9)
RGB (0–1)0.6392, 0.0039, 0.0353
RGB percentages63.9%, 0.4%, 3.5%
HSLhsl(357, 98.8%, 32.2%)
HSV / HSBhsv(357, 99.4%, 63.9%)
CMYK0%, 99.4%, 94.5%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,682,633
CSS custom property--colour: #A30109;
Brightness & contrast
Relative luminance0.07828WCAG 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 8.19:1
Contrast with white8.19:1WCAG normal text: AAA
Contrast with black2.57:1WCAG normal text: Fail
Greyscale equivalent#242424
Inverted#5CFEF6
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.19:1WCAG large text: AAA
Contrast with black, large text2.57:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#01A39B
Analogous#A3015A, #A34A01
Triadic#09A301, #0109A3
Split complementary#01A34A, #015AA3
Tetradic#5AA301, #01A39B, #4A01A3
Tints, shades & saturation
Channel breakdown
R163
G1
B9
Red163 (63.9%)
Green1 (0.4%)
Blue9 (3.5%)
Hue357.04°
Saturation (HSL)98.78%
Lightness32.16%
Dominant channelRed
Hex per channelR A3 · G 01 · B 09
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