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Recognised as Colour

#280C15

  • #280C15
  • Red
  • Dark
  • Nearest: Black

#280C15 is a red with RGB values 40, 12, 21 and HSL 341°, 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

#280C15#280C15
HEX#280C15
RGBrgb(40, 12, 21)
RGB (0–1)0.1569, 0.0471, 0.0824
RGB percentages15.7%, 4.7%, 8.2%
HSLhsl(340.7, 53.8%, 10.2%)
HSV / HSBhsv(340.7, 70%, 15.7%)
CMYK0%, 70%, 47.5%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,533
CSS custom property--colour: #280C15;

Brightness & contrast

Relative luminance0.00768WCAG 2.x, 0 is black and 1 is white
Perceived brightness24.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.2:1
Contrast with white18.2:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#D7F3EA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#111215no red cones; affects about 1% of men; ΔE 15.6 from the original
Deuteranopia#181714no green cones; the most common form, about 1% of men; ΔE 16 from the original
Tritanopia#2C090Fno blue cones; rare, and affects men and women equally; ΔE 4.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.2:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Black · ΔE 17.1Dark slate grey · ΔE 36.9Dim grey · ΔE 40.6Gray · ΔE 49.2Dark slateblue · ΔE 50Slate grey · ΔE 50.5
Nearest named CSS colourBlack (#000000)ΔE 17.12, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0C281F
Analogous#280C23, #28110C
Triadic#15280C, #0C1528
Split complementary#0C2811, #0C2328
Tetradic#23280C, #0C281F, #110C28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C43C68
Lighter +30%#9E2F53
Lighter +20%#76243E
Lighter +10%#4F182A
Darker −10%#010000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2F0613
Less saturated −25%#221217

Channel breakdown

R40
G12
B21
Red40 (15.7%)
Green12 (4.7%)
Blue21 (8.2%)
Hue340.71°
Saturation (HSL)53.85%
Lightness10.2%
Dominant channelRed
Hex per channelR 28 · G 0C · B 15

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Every value on this page was computed from “280c15” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.