#3F0B0B
Closest named color: Deep Brown (#410200). oklch(24.6% 0.08 25.3), rgb(63, 11, 11).
Aa
White text reads best on this color (16.61:1).
About this color
#3F0B0B is a very dark, moderately saturated red. In OKLCH its lightness is 25%, its chroma 0.080 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.018 away. White text reads best on it, at 16.61:1.
| 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 | 16.61:1 |
Values
| HEX | #3F0B0B |
| RGB | rgb(63, 11, 11) |
| HSL | hsl(0, 70%, 15%) |
| OKLCH | oklch(24.6% 0.08 25.3) |
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 #3F0B0B | 16.61:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #3F0B0B | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #3F0B0B text on white | 16.61:1 | AAA | Lc 102.9 | Preferred for body text |
| #3F0B0B 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FACCC8
oklch(88.4% 0.053 24)
-
Step 300
300
#F8A9A1
oklch(80.9% 0.095 25.8)
-
Step 400
400
#F0766F
oklch(70.6% 0.152 25)
-
Step 500
500
#E74A48
oklch(63% 0.194 25.3)
-
Step 600
600
#D31E2A
oklch(55.6% 0.211 25.2)
-
Step 700
700
#B6071C
oklch(49.1% 0.196 25.4)
-
Step 800
800
#94111A
oklch(42.7% 0.163 25.2)
-
Step 900
900
#771A1B
oklch(37.7% 0.127 25.3)
-
Step 950
950 (this color)
#3F0B0B
oklch(24.6% 0.08 25.3)
#3F0B0B 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) | #1A170A | 0.087 |
| Deuteranopia (no green cones) | #272209 | 0.079 |
| Tritanopia (no blue cones) | #46000C | 0.022 |
| Achromatopsia (no color) | #1E1E1E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F0B0B
#3F0B0B
oklch(24.6% 0.08 25.3)
- #00262A
#00262A
oklch(24.5% 0.042 205.3)
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 #3F0B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.018
- Dark Maroon #3C0008 ΔE 0.024
- Mahogany #4A0100 ΔE 0.028
- Chocolate Brown #411900 ΔE 0.040
- Dark Brown #341C02 ΔE 0.052
- Dark Plum #3F012C ΔE 0.067
- Aubergine #3D0734 ΔE 0.077
- Eggplant #380835 ΔE 0.081
Use #3F0B0B 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.