Colour
#280A13
- #280A13
- Red
- Dark
- Nearest: Black
#280A13 is a red with RGB values 40, 10, 19 and HSL 342°, 60%, 10%. It is a dark colour, so white text on it reaches 18.4:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#280A13#280A13
HEX#280A13
RGBrgb(40, 10, 19)
RGB (0–1)0.1569, 0.0392, 0.0745
RGB percentages15.7%, 3.9%, 7.5%
HSLhsl(342, 60%, 9.8%)
HSV / HSBhsv(342, 75%, 15.7%)
CMYK0%, 75%, 52.5%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,019
CSS custom property--colour: #280A13;
Brightness & contrast
Relative luminance0.00715WCAG 2.x, 0 is black and 1 is white
Perceived brightness24 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.37:1
Contrast with white18.37:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#D7F5EC
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.37:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#0A281F
Analogous#280A22, #28100A
Triadic#13280A, #0A1328
Split complementary#0A2810, #0A2228
Tetradic#22280A, #0A281F, #100A28
Tints, shades & saturation
Channel breakdown
R40
G10
B19
Red40 (15.7%)
Green10 (3.9%)
Blue19 (7.5%)
Hue342°
Saturation (HSL)60%
Lightness9.8%
Dominant channelRed
Hex per channelR 28 · G 0A · B 13
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