#420311
Closest named color: Dark Maroon (#3C0008). oklch(24.5% 0.092 15.5), rgb(66, 3, 17).
Aa
White text reads best on this color (16.76:1).
About this color
#420311 is a very dark, moderately saturated red. In OKLCH its lightness is 24%, its chroma 0.092 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.021 away. White text reads best on it, at 16.76:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.25:1 |
| White text | 16.76:1 |
Values
| HEX | #420311 |
| RGB | rgb(66, 3, 17) |
| HSL | hsl(347, 91%, 14%) |
| OKLCH | oklch(24.5% 0.092 15.5) |
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 #420311 | 16.76:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #420311 | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #420311 text on white | 16.76:1 | AAA | Lc 102.7 | Preferred for body text |
| #420311 text on black | 1.25:1 | 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
#FFE2E3
oklch(93.7% 0.032 15.4)
-
Step 200
200
#FFCACC
oklch(88.6% 0.06 15.8)
-
Step 300
300
#FFA3A9
oklch(80.9% 0.109 15.5)
-
Step 400
400
#FA6B7C
oklch(70.8% 0.175 15.5)
-
Step 500
500
#F2325B
oklch(63.1% 0.224 15.4)
-
Step 600
600
#D60046
oklch(55.7% 0.223 15.4)
-
Step 700
700
#B5003A
oklch(49.1% 0.196 15.4)
-
Step 800
800
#96002E
oklch(42.8% 0.171 15.6)
-
Step 900
900
#7D0627
oklch(37.8% 0.147 15.2)
-
Step 950
950 (this color)
#420311
oklch(24.5% 0.092 15.5)
#420311 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) | #161511 | 0.104 |
| Deuteranopia (no green cones) | #26220F | 0.094 |
| Tritanopia (no blue cones) | #490009 | 0.019 |
| Achromatopsia (no color) | #1E1E1E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #420311
#420311
oklch(24.5% 0.092 15.5)
- #002627
#002627
oklch(24.4% 0.041 197.4)
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 #420311, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.021
- Deep Brown #410200 ΔE 0.025
- Mahogany #4A0100 ΔE 0.030
- Dark Plum #3F012C ΔE 0.053
- Chocolate Brown #411900 ΔE 0.057
- Aubergine #3D0734 ΔE 0.066
- Dark Brown #341C02 ΔE 0.071
- Eggplant #380835 ΔE 0.071
Use #420311 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.