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Recognised as Colour

#280C18

  • #280C18
  • Red
  • Dark
  • Nearest: Black

#280C18 is a red with RGB values 40, 12, 24 and HSL 334°, 54%, 10%. It is a dark colour, so white text on it reaches 18.2:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#280C18#280C18
HEX#280C18
RGBrgb(40, 12, 24)
RGB (0–1)0.1569, 0.0471, 0.0941
RGB percentages15.7%, 4.7%, 9.4%
HSLhsl(334.3, 53.8%, 10.2%)
HSV / HSBhsv(334.3, 70%, 15.7%)
CMYK0%, 70%, 40%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,536
CSS custom property--colour: #280C18;

Brightness & contrast

Relative luminance0.0078WCAG 2.x, 0 is black and 1 is white
Perceived brightness25.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.17:1
Contrast with white18.17:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#D7F3E7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#101218no red cones; affects about 1% of men; ΔE 15.8 from the original
Deuteranopia#181817no green cones; the most common form, about 1% of men; ΔE 16.6 from the original
Tritanopia#2C0A11no blue cones; rare, and affects men and women equally; ΔE 5.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.17:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Black · ΔE 17.7Dark slate grey · ΔE 37Dim grey · ΔE 40.7Dark slateblue · ΔE 48.1Gray · ΔE 49.3Slate grey · ΔE 50.1
Nearest named CSS colourBlack (#000000)ΔE 17.69, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0C281C
Analogous#280C26, #280E0C
Triadic#18280C, #0C1828
Split complementary#0C280E, #0C2628
Tetradic#26280C, #0C281C, #0E0C28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C43C76
Lighter +30%#9E2F5F
Lighter +20%#762447
Lighter +10%#4F1830
Darker −10%#010000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2F0617
Less saturated −25%#221219

Channel breakdown

R40
G12
B24
Red40 (15.7%)
Green12 (4.7%)
Blue24 (9.4%)
Hue334.29°
Saturation (HSL)53.85%
Lightness10.2%
Dominant channelRed
Hex per channelR 28 · G 0C · B 18

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Every value on this page was computed from “280c18” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.