#42000C
Closest named color: Dark Maroon (#3C0008). oklch(24% 0.096 18.5), rgb(66, 0, 12).
Aa
White text reads best on this color (16.97:1).
About this color
#42000C is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.096 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.016 away. White text reads best on it, at 16.97:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.096) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #42000C |
| RGB | rgb(66, 0, 12) |
| HSL | hsl(349, 100%, 13%) |
| OKLCH | oklch(24% 0.096 18.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #42000C | 16.97:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #42000C | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #42000C text on white | 16.97:1 | AAA | Lc 102.7 | Preferred for body text |
| #42000C text on black | 1.23:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FFE2E1
oklch(93.6% 0.032 20.1)
-
Step 200
200
#FFCACA
oklch(88.5% 0.06 18.4)
-
Step 300
300
#FFA4A5
oklch(80.9% 0.108 19)
-
Step 400
400
#FD6873
oklch(70.6% 0.182 18.6)
-
Step 500
500
#F6294F
oklch(63.1% 0.233 18.5)
-
Step 600
600
#D7003C
oklch(55.7% 0.223 18.7)
-
Step 700
700
#B60032
oklch(49.2% 0.197 18.4)
-
Step 800
800
#960027
oklch(42.6% 0.171 18.7)
-
Step 900
900
#7F0020
oklch(37.8% 0.151 18.5)
-
Step 950
950 (this color)
#42000C
oklch(24% 0.096 18.5)
#42000C with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #15130C | 0.108 |
| Deuteranopia (no green cones) | #26210A | 0.097 |
| Tritanopia (no blue cones) | #4A0005 | 0.023 |
| Achromatopsia (no color) | #1C1C1C | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42000C
#42000C
oklch(24% 0.096 18.5)
- #002526
#002526
oklch(24% 0.041 197.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #42000C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.016
- Deep Brown #410200 ΔE 0.020
- Mahogany #4A0100 ΔE 0.028
- Chocolate Brown #411900 ΔE 0.058
- Dark Plum #3F012C ΔE 0.059
- Dark Brown #341C02 ΔE 0.072
- Aubergine #3D0734 ΔE 0.072
- Eggplant #380835 ΔE 0.078
Use #42000C in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.