#3F0B11
Closest named color: Deep Brown (#410200). oklch(24.7% 0.08 19), rgb(63, 11, 17).
Aa
White text reads best on this color (16.57:1).
About this color
#3F0B11 is a very dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.080 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.024 away. White text reads best on it, at 16.57:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.080) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.26:1 |
| White text | 16.57:1 |
Values
| HEX | #3F0B11 |
| RGB | rgb(63, 11, 17) |
| HSL | hsl(353, 70%, 15%) |
| OKLCH | oklch(24.7% 0.08 19) |
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 #3F0B11 | 16.57:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #3F0B11 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #3F0B11 text on white | 16.57:1 | AAA | Lc 102.9 | Preferred for body text |
| #3F0B11 text on black | 1.26:1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FACCCB
oklch(88.5% 0.052 19.6)
-
Step 300
300
#F8A8A8
oklch(80.9% 0.095 19.3)
-
Step 400
400
#F0757B
oklch(70.7% 0.152 18.7)
-
Step 500
500
#E64959
oklch(63% 0.193 19)
-
Step 600
600
#D21D3F
oklch(55.7% 0.209 19)
-
Step 700
700
#B50531
oklch(49.1% 0.195 19)
-
Step 800
800
#931029
oklch(42.7% 0.161 19.1)
-
Step 900
900
#761A25
oklch(37.7% 0.125 19.4)
-
Step 950
950 (this color)
#3F0B11
oklch(24.7% 0.08 19)
#3F0B11 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) | #191811 | 0.088 |
| Deuteranopia (no green cones) | #272310 | 0.080 |
| Tritanopia (no blue cones) | #46000E | 0.021 |
| Achromatopsia (no color) | #1F1F1F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F0B11
#3F0B11
oklch(24.7% 0.08 19)
- #002729
#002729
oklch(24.8% 0.042 200)
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 #3F0B11, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.024
- Dark Maroon #3C0008 ΔE 0.025
- Mahogany #4A0100 ΔE 0.032
- Chocolate Brown #411900 ΔE 0.046
- Dark Brown #341C02 ΔE 0.057
- Dark Plum #3F012C ΔE 0.059
- Aubergine #3D0734 ΔE 0.068
- Eggplant #380835 ΔE 0.073
Use #3F0B11 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.