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Recognised as Colour

#280B02

  • #280B02
  • Red
  • Dark
  • Nearest: Black

#280B02 is a red with RGB values 40, 11, 2 and HSL 14°, 90%, 8%. 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

#280B02#280B02
HEX#280B02
RGBrgb(40, 11, 2)
RGB (0–1)0.1569, 0.0431, 0.0078
RGB percentages15.7%, 4.3%, 0.8%
HSLhsl(14.2, 90.5%, 8.2%)
HSV / HSBhsv(14.2, 95%, 15.7%)
CMYK0%, 72.5%, 95%, 84.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,624,258
CSS custom property--colour: #280B02;

Brightness & contrast

Relative luminance0.00695WCAG 2.x, 0 is black and 1 is white
Perceived brightness23.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.44:1
Contrast with white18.44:1WCAG normal text: AAA
Contrast with black1.14:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#D7F4FD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#131001no red cones; affects about 1% of men; ΔE 15.1 from the original
Deuteranopia#1A1602no green cones; the most common form, about 1% of men; ΔE 15.2 from the original
Tritanopia#2D0509no blue cones; rare, and affects men and women equally; ΔE 7.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.44:1WCAG large text: AAA
Contrast with black, large text1.14:1WCAG large text: Fail

Named colours

Black · ΔE 17.5Dark slate grey · ΔE 37.8Dim grey · ΔE 41.5Saddle brown · ΔE 46.6Sienna · ΔE 48.7Maroon · ΔE 49
Nearest named CSS colourBlack (#000000)ΔE 17.51, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#021F28
Analogous#28020C, #281E02
Triadic#02280B, #0B0228
Split complementary#02281E, #020C28
Tetradic#0C2802, #021F28, #1E0228

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EA400C
Lighter +30%#BA3309
Lighter +20%#892607
Lighter +10%#591804
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2A0A00
Less saturated −25%#230E07

Channel breakdown

R40
G11
B2
Red40 (15.7%)
Green11 (4.3%)
Blue2 (0.8%)
Hue14.21°
Saturation (HSL)90.48%
Lightness8.24%
Dominant channelRed
Hex per channelR 28 · G 0B · B 02

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Every value on this page was computed from “280b02” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.