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#12B89A
#121212
#2D55FF

3 colours.

Edit on the PadRiot meSwatch card

Ramps

Every shade you will need.

Eleven steps per colour, from 50 (almost white) to 950 (almost black). The hue is held in OKLCH; where a step cannot hold the colour's full strength on screen, it is softened, never shifted. The ring marks the step nearest your own colour.

#12B89A

  1. 50#E0FFF5
  2. 100#ABFFE8
  3. 200#6AF3D3
  4. 300#4AD9B9
  5. 400#1BBB9D
  6. 500#009D82
  7. 600#007E69
  8. 700#006453
  9. 800#004B3E
  10. 900#00342A
  11. 950#002119

#121212

  1. 50#F7F7F7
  2. 100#EBEBEB
  3. 200#D7D7D7
  4. 300#BEBEBE
  5. 400#A1A1A1
  6. 500#868686
  7. 600#6C6C6C
  8. 700#555555
  9. 800#404040
  10. 900#2B2B2B
  11. 950#1B1B1B

#2D55FF

  1. 50#F3F7FF
  2. 100#E2EBFF
  3. 200#C6D7FF
  4. 300#A0BCFF
  5. 400#769DFF
  6. 500#4D7AFF
  7. 600#2A51FB
  8. 700#1B32DE
  9. 800#1200C0
  10. 900#0A008A
  11. 950#04005E

Ramps are a starting point, not a rule: check text-on-background pairs from your ramps in the contrast grid before you use them. Screens differ, and printed colour differs from screen colour. RiotPad works in screen colour (sRGB); it does not match paint, ink or fabric colours.