Recognised as Colour
#18030D
- #18030D
- Red
- Dark
- Nearest: Black
#18030D is a red with RGB values 24, 3, 13 and HSL 331°, 78%, 5%. It is a dark colour, so white text on it reaches 19.9:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#18030D#18030D
HEX#18030D
RGBrgb(24, 3, 13)
RGB (0–1)0.0941, 0.0118, 0.051
RGB percentages9.4%, 1.2%, 5.1%
HSLhsl(331.4, 77.8%, 5.3%)
HSV / HSBhsv(331.4, 87.5%, 9.4%)
CMYK0%, 87.5%, 45.8%, 90.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,573,645
CSS custom property--colour: #18030D;
Brightness & contrast
Relative luminance0.00288WCAG 2.x, 0 is black and 1 is white
Perceived brightness14 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 19.85:1
Contrast with white19.85:1WCAG normal text: AAA
Contrast with black1.06:1WCAG normal text: Fail
Greyscale equivalent#080808
Inverted#E7FCF2
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text19.85:1WCAG large text: AAA
Contrast with black, large text1.06:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#03180E
Analogous#180318, #180403
Triadic#0D1803, #030D18
Split complementary#031804, #031718
Tetradic#171803, #03180E, #030318
Tints, shades & saturation
Channel breakdown
R24
G3
B13
Red24 (9.4%)
Green3 (1.2%)
Blue13 (5.1%)
Hue331.43°
Saturation (HSL)77.78%
Lightness5.29%
Dominant channelRed
Hex per channelR 18 · G 03 · B 0D
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