#390B03
Closest named color: Deep Brown (#410200). oklch(23.2% 0.075 34), rgb(57, 11, 3).
Aa
White text reads best on this color (17.16:1).
About this color
#390B03 is a very dark, moderately saturated red. In OKLCH its lightness is 23%, its chroma 0.075 and its hue 34°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Brown (#410200), ΔE 0.021 away. White text reads best on it, at 17.16:1.
| Hue family | Reds |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.075) |
| Temperature | warm |
| Nearest name | Deep Brown (#410200) |
| Black text | 1.22:1 |
| White text | 17.16:1 |
Values
| HEX | #390B03 |
| RGB | rgb(57, 11, 3) |
| HSL | hsl(9, 90%, 12%) |
| OKLCH | oklch(23.2% 0.075 34) |
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 #390B03 | 17.16:1 | AAA | Lc -105.9 | Preferred for body text |
| Black text on #390B03 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #390B03 text on white | 17.16:1 | AAA | Lc 103.5 | Preferred for body text |
| #390B03 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
#FDF3F0
oklch(97.1% 0.012 37.4)
-
Step 100
100
#FAE4DF
oklch(93.5% 0.025 32.9)
-
Step 200
200
#F8CEC4
oklch(88.5% 0.05 33.6)
-
Step 300
300
#F4AC9B
oklch(80.9% 0.089 33.8)
-
Step 400
400
#EB7D63
oklch(70.8% 0.141 34.4)
-
Step 500
500
#E15536
oklch(63.1% 0.181 34)
-
Step 600
600
#CD3207
oklch(55.7% 0.197 34)
-
Step 700
700
#AE2600
oklch(49% 0.177 33.9)
-
Step 800
800
#8F1F03
oklch(42.6% 0.151 33.8)
-
Step 900
900
#73220F
oklch(37.7% 0.118 34.3)
-
Step 950
950 (this color)
#390B03
oklch(23.2% 0.075 34)
#390B03 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) | #191502 | 0.077 |
| Deuteranopia (no green cones) | #241F02 | 0.070 |
| Tritanopia (no blue cones) | #400009 | 0.028 |
| Achromatopsia (no color) | #1B1B1B | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #390B03
#390B03
oklch(23.2% 0.075 34)
- #002229
#002229
oklch(23.2% 0.041 214.2)
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 #390B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Brown #410200 ΔE 0.021
- Dark Maroon #3C0008 ΔE 0.026
- Mahogany #4A0100 ΔE 0.040
- Chocolate Brown #411900 ΔE 0.043
- Dark Brown #341C02 ΔE 0.045
- Dark Plum #3F012C ΔE 0.080
- Very Dark Brown #1D0200 ΔE 0.083
- Jet #212529 ΔE 0.088
Use #390B03 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.