#0A0000
Closest named color: Very Dark Brown (#1D0200). oklch(9.1% 0.037 29.2), rgb(10, 0, 0).
Aa
White text reads best on this color (20.73:1).
About this color
#0A0000 is a very dark, muted red. In OKLCH its lightness is 9%, its chroma 0.037 and its hue 29°. 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 20.73:1.
| 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 | 20.73:1 |
Values
| HEX | #0A0000 |
| RGB | rgb(10, 0, 0) |
| HSL | hsl(0, 100%, 2%) |
| OKLCH | oklch(9.1% 0.037 29.2) |
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 #0A0000 | 20.73:1 | AAA | Lc -107.9 | Preferred for body text |
| Black text on #0A0000 | 1.01:1 | Fails | Lc 0.0 | Not readable |
| #0A0000 text on white | 20.73:1 | AAA | Lc 106.0 | Preferred for body text |
| #0A0000 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
#F9F4F3
oklch(97.1% 0.006 31.1)
-
Step 100
100
#F2E7E5
oklch(93.6% 0.012 29.9)
-
Step 200
200
#E9D4D0
oklch(88.6% 0.024 30.5)
-
Step 300
300
#DCB7B0
oklch(81% 0.044 30.6)
-
Step 400
400
#C99087
oklch(70.6% 0.071 29)
-
Step 500
500
#BA7469
oklch(63.1% 0.091 29.5)
-
Step 600
600
#A55C51
oklch(55.7% 0.098 29.6)
-
Step 700
700
#8D4B42
oklch(49.1% 0.091 28.9)
-
Step 800
800
#733E36
oklch(42.7% 0.076 29.6)
-
Step 900
900
#5D352F
oklch(37.7% 0.059 29.3)
-
Step 950
950 (this color)
#0A0000
oklch(9.1% 0.037 29.2)
#0A0000 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) | #020100 | 0.037 |
| Deuteranopia (no green cones) | #040300 | 0.036 |
| Tritanopia (no blue cones) | #0C0000 | 0.006 |
| Achromatopsia (no color) | #020202 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A0000
#0A0000
oklch(9.1% 0.037 29.2)
- #000304
#000304
oklch(8.9% 0.015 211.9)
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 #0A0000, 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 0.077
- Black #000000 ΔE 0.098
- Rich Navy #001219 ΔE 0.104
- Midnight #03012D ΔE 0.122
- Dark Navy Blue #00022E ΔE 0.126
- Very Dark Blue #000133 ΔE 0.136
- Dark Navy #000435 ΔE 0.139
Use #0A0000 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.