Heartbeat Monochromatic Color Scheme

Five colors arranged by the monochromatic rule around Heartbeat (#AA0000), each snapped to its nearest named color.

#1D0200

#550000

#AA0000

#F20000

#FF4444

Color names and codes

Name	HEX	RGB	HSL	CMYK
Dwarf Fortress	`#1D0200`	29, 2, 0	4°, 100%, 6%	0, 93, 100, 89
Soooo Bloody	`#550000`	85, 0, 0	0°, 100%, 17%	0, 100, 100, 67
Heartbeat	`#AA0000`	170, 0, 0	0°, 100%, 33%	0, 100, 100, 33
Spectrum Red	`#F20000`	242, 0, 0	0°, 100%, 47%	0, 100, 100, 5
Tomato Frog	`#FF4444`	255, 68, 68	0°, 100%, 63%	0, 73, 73, 0

Which pairs work for text

Text on background	Contrast	WCAG
Aa #1D0200 on #FF4444	5.81:1	AA
Aa #1D0200 on #F20000	4.50:1	AA
Aa #550000 on #FF4444	4.45:1	AA large
Aa #550000 on #F20000	3.44:1	AA large
Aa #1D0200 on #AA0000	2.55:1	—
Aa #AA0000 on #FF4444	2.27:1	—

CSS variables

:root {
  --color-1: #1d0200; /* Dwarf Fortress */
  --color-2: #550000; /* Soooo Bloody */
  --color-3: #aa0000; /* Heartbeat */
  --color-4: #f20000; /* Spectrum Red */
  --color-5: #ff4444; /* Tomato Frog */
}

Other schemes from Heartbeat

More Dark Red monochromatic palettes

Questions

What colors go with Heartbeat?

In a monochromatic scheme: Dwarf Fortress (#1D0200), Soooo Bloody (#550000), Spectrum Red (#F20000), Tomato Frog (#FF4444).

What is the hex code of Heartbeat?

#AA0000.