Colour
#0A0000
- #0A0000
- Red
- Dark
- Nearest: Black
#0A0000 is a red with RGB values 10, 0, 0 and HSL 0°, 100%, 2%. It is a dark colour, so white text on it reaches 20.7:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#0A0000#0A0000
HEX#0A0000
RGBrgb(10, 0, 0)
RGB (0–1)0.0392, 0, 0
RGB percentages3.9%, 0%, 0%
HSLhsl(0, 100%, 2%)
HSV / HSBhsv(0, 100%, 3.9%)
CMYK0%, 100%, 100%, 96.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer655,360
CSS custom property--colour: #0A0000;
Brightness & contrast
Relative luminance0.00065WCAG 2.x, 0 is black and 1 is white
Perceived brightness5.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.73:1
Contrast with white20.73:1WCAG normal text: AAA
Contrast with black1.01:1WCAG normal text: Fail
Greyscale equivalent#020202
Inverted#F5FFFF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.73:1WCAG large text: AAA
Contrast with black, large text1.01:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#000A0A
Analogous#0A0005, #0A0500
Triadic#000A00, #00000A
Split complementary#000A05, #00050A
Tetradic#050A00, #000A0A, #05000A
Tints, shades & saturation
Channel breakdown
R10
G0
B0
Red10 (3.9%)
Green0 (0%)
Blue0 (0%)
Hue0°
Saturation (HSL)100%
Lightness1.96%
Dominant channelRed
Hex per channelR 0A · G 00 · B 00
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