#0A0001
Closest named color: Very Dark Brown (#1D0200). oklch(9.2% 0.037 14.3), rgb(10, 0, 1).
Aa
White text reads best on this color (20.72:1).
About this color
#0A0001 is a very dark, muted red. In OKLCH its lightness is 9%, its chroma 0.037 and its hue 14°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.063 away. White text reads best on it, at 20.72:1.
| Hue family | Reds |
| Lightness | very dark (9%) |
| Chroma | muted (0.037) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.01:1 |
| White text | 20.72:1 |
Values
| HEX | #0A0001 |
| RGB | rgb(10, 0, 1) |
| HSL | hsl(354, 100%, 2%) |
| OKLCH | oklch(9.2% 0.037 14.3) |
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 #0A0001 | 20.72:1 | AAA | Lc -107.9 | Preferred for body text |
| Black text on #0A0001 | 1.01:1 | Fails | Lc 0.0 | Not readable |
| #0A0001 text on white | 20.72:1 | AAA | Lc 106.0 | Preferred for body text |
| #0A0001 text on black | 1.01:1 | 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
#F2E7E7
oklch(93.7% 0.012 17.4)
-
Step 200
200
#E9D3D4
oklch(88.5% 0.025 14.5)
-
Step 300
300
#DBB6B8
oklch(80.9% 0.043 14.4)
-
Step 400
400
#C88F93
oklch(70.7% 0.07 14.3)
-
Step 500
500
#B97379
oklch(63.2% 0.089 14.3)
-
Step 600
600
#A45A62
oklch(55.6% 0.097 13.8)
-
Step 700
700
#8C4A51
oklch(49.1% 0.089 14.2)
-
Step 800
800
#723D42
oklch(42.7% 0.074 14.7)
-
Step 900
900
#5C3438
oklch(37.6% 0.058 13.8)
-
Step 950
950 (this color)
#0A0001
oklch(9.2% 0.037 14.3)
#0A0001 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) | #010101 | 0.044 |
| Deuteranopia (no green cones) | #030301 | 0.040 |
| Tritanopia (no blue cones) | #0C0000 | 0.011 |
| Achromatopsia (no color) | #020202 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A0001
#0A0001
oklch(9.2% 0.037 14.3)
- #000303
#000303
oklch(8.8% 0.015 194.8)
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 #0A0001, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.063
- Almost Black #070D0D ΔE 0.076
- Black #000000 ΔE 0.099
- Rich Navy #001219 ΔE 0.101
- Midnight #03012D ΔE 0.115
- Dark Navy Blue #00022E ΔE 0.119
- Very Dark Blue #000133 ΔE 0.129
- Dark Navy #000435 ΔE 0.132
Use #0A0001 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.