#3F010A
Closest named color: Dark Maroon (#3C0008). oklch(23.4% 0.092 20), rgb(63, 1, 10).
Aa
White text reads best on this color (17.21:1).
About this color
#3F010A is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.092 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.009 away. White text reads best on it, at 17.21:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.22:1 |
| White text | 17.21:1 |
Values
| HEX | #3F010A |
| RGB | rgb(63, 1, 10) |
| HSL | hsl(351, 97%, 13%) |
| OKLCH | oklch(23.4% 0.092 20) |
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 #3F010A | 17.21:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #3F010A | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #3F010A text on white | 17.21:1 | AAA | Lc 103.1 | Preferred for body text |
| #3F010A text on black | 1.22:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E1
oklch(93.6% 0.032 20.1)
-
Step 200
200
#FFCAC9
oklch(88.5% 0.06 19.6)
-
Step 300
300
#FFA4A4
oklch(80.9% 0.108 19.7)
-
Step 400
400
#FA6C72
oklch(70.7% 0.174 20.1)
-
Step 500
500
#F2344D
oklch(63% 0.223 20.1)
-
Step 600
600
#D70037
oklch(55.6% 0.223 20.1)
-
Step 700
700
#B6002D
oklch(49.1% 0.197 20.1)
-
Step 800
800
#970024
oklch(42.8% 0.172 20)
-
Step 900
900
#7D081E
oklch(37.7% 0.146 20.3)
-
Step 950
950 (this color)
#3F010A
oklch(23.4% 0.092 20)
#3F010A 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) | #15120A | 0.102 |
| Deuteranopia (no green cones) | #242008 | 0.094 |
| Tritanopia (no blue cones) | #460005 | 0.019 |
| Achromatopsia (no color) | #1B1B1B | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F010A
#3F010A
oklch(23.4% 0.092 20)
- #002325
#002325
oklch(23.3% 0.04 200.4)
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 #3F010A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.009
- Deep Brown #410200 ΔE 0.018
- Mahogany #4A0100 ΔE 0.032
- Chocolate Brown #411900 ΔE 0.058
- Dark Plum #3F012C ΔE 0.062
- Dark Brown #341C02 ΔE 0.068
- Aubergine #3D0734 ΔE 0.075
- Eggplant #380835 ΔE 0.079
Use #3F010A 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.