#01010B
Closest named color: Almost Black (#070D0D). oklch(8.4% 0.037 275.1), rgb(1, 1, 11).
Aa
White text reads best on this color (20.78:1).
About this color
#01010B is a very dark, muted blue. In OKLCH its lightness is 8%, its chroma 0.037 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.077 away. White text reads best on it, at 20.78:1.
| Hue family | Blues |
| Lightness | very dark (8%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.01:1 |
| White text | 20.78:1 |
Values
| HEX | #01010B |
| RGB | rgb(1, 1, 11) |
| HSL | hsl(240, 83%, 2%) |
| OKLCH | oklch(8.4% 0.037 275.1) |
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 #01010B | 20.78:1 | AAA | Lc -107.9 | Preferred for body text |
| Black text on #01010B | 1.01:1 | Fails | Lc 0.0 | Not readable |
| #01010B text on white | 20.78:1 | AAA | Lc 106.0 | Preferred for body text |
| #01010B 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#949ECC
oklch(70.8% 0.068 275)
-
Step 500
500
#7A85BF
oklch(63.1% 0.088 275.3)
-
Step 600
600
#636EAB
oklch(55.6% 0.096 275.1)
-
Step 700
700
#525C93
oklch(49.1% 0.089 274.8)
-
Step 800
800
#434B77
oklch(42.6% 0.074 275)
-
Step 900
900
#393F60
oklch(37.7% 0.057 275.4)
-
Step 950
950 (this color)
#01010B
oklch(8.4% 0.037 275.1)
#01010B 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) | #00020B | 0.012 |
| Deuteranopia (no green cones) | #00010B | 0.009 |
| Tritanopia (no blue cones) | #000204 | 0.027 |
| Achromatopsia (no color) | #020202 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01010B
#01010B
oklch(8.4% 0.037 275.1)
- #030200
#030200
oklch(8.6% 0.018 94.5)
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 #01010B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.077
- Midnight #03012D ΔE 0.078
- Dark Navy Blue #00022E ΔE 0.080
- Very Dark Blue #000133 ΔE 0.090
- Rich Navy #001219 ΔE 0.091
- Black #000000 ΔE 0.091
- Dark Navy #000435 ΔE 0.097
- Very Dark Brown #1D0200 ΔE 0.103
Use #01010B 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.