#1F090B
Closest named color: Very Dark Brown (#1D0200). oklch(17.7% 0.038 16.1), rgb(31, 9, 11).
Aa
White text reads best on this color (19.05:1).
About this color
#1F090B is a very dark, muted red. In OKLCH its lightness is 18%, its chroma 0.038 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.033 away. White text reads best on it, at 19.05:1.
| Hue family | Reds |
| Lightness | very dark (18%) |
| Chroma | muted (0.038) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.10:1 |
| White text | 19.05:1 |
Values
| HEX | #1F090B |
| RGB | rgb(31, 9, 11) |
| HSL | hsl(355, 55%, 8%) |
| OKLCH | oklch(17.7% 0.038 16.1) |
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 #1F090B | 19.05:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #1F090B | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #1F090B text on white | 19.05:1 | AAA | Lc 105.3 | Preferred for body text |
| #1F090B text on black | 1.10:1 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F3E6E7
oklch(93.6% 0.014 12)
-
Step 200
200
#E9D3D3
oklch(88.5% 0.025 17.6)
-
Step 300
300
#DDB5B7
oklch(80.9% 0.046 14.8)
-
Step 400
400
#CA8E91
oklch(70.6% 0.073 15.8)
-
Step 500
500
#BB7276
oklch(63.2% 0.093 16.5)
-
Step 600
600
#A6595F
oklch(55.6% 0.101 16)
-
Step 700
700
#8E494E
oklch(49.2% 0.093 16.5)
-
Step 800
800
#733C40
oklch(42.6% 0.077 16.3)
-
Step 900
900
#5E3436
oklch(37.8% 0.061 17.3)
-
Step 950
950 (this color)
#1F090B
oklch(17.7% 0.038 16.1)
#1F090B 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) | #0E0D0B | 0.041 |
| Deuteranopia (no green cones) | #13120B | 0.040 |
| Tritanopia (no blue cones) | #22060A | 0.011 |
| Achromatopsia (no color) | #101010 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F090B
#1F090B
oklch(17.7% 0.038 16.1)
- #001515
#001515
oklch(17.7% 0.03 194.8)
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 #1F090B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.033
- Almost Black #070D0D ΔE 0.054
- Rich Navy #001219 ΔE 0.068
- Dark Maroon #3C0008 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.077
- Deep Brown #410200 ΔE 0.084
- Dark Brown #341C02 ΔE 0.087
- Very Dark Purple #2A0134 ΔE 0.091
Use #1F090B 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.