#010511
Closest named color: Almost Black (#070D0D). oklch(11.7% 0.033 258.4), rgb(1, 5, 17).
Aa
White text reads best on this color (20.36:1).
About this color
#010511 is a very dark, muted blue. In OKLCH its lightness is 12%, its chroma 0.033 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.046 away. White text reads best on it, at 20.36:1.
| Hue family | Blues |
| Lightness | very dark (12%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.03:1 |
| White text | 20.36:1 |
Values
| HEX | #010511 |
| RGB | rgb(1, 5, 17) |
| HSL | hsl(225, 89%, 4%) |
| OKLCH | oklch(11.7% 0.033 258.4) |
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 #010511 | 20.36:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #010511 | 1.03:1 | Fails | Lc 0.0 | Not readable |
| #010511 text on white | 20.36:1 | AAA | Lc 106.0 | Preferred for body text |
| #010511 text on black | 1.03:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C2DA
oklch(81% 0.038 258.4)
-
Step 400
400
#89A2C8
oklch(70.7% 0.063 258.6)
-
Step 500
500
#6C8BB9
oklch(63.1% 0.078 258.1)
-
Step 600
600
#5474A6
oklch(55.6% 0.087 259.1)
-
Step 700
700
#44618E
oklch(49% 0.081 258.9)
-
Step 800
800
#385073
oklch(42.8% 0.066 257.7)
-
Step 900
900
#30425D
oklch(37.6% 0.052 258.3)
-
Step 950
950 (this color)
#010511
oklch(11.7% 0.033 258.4)
#010511 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) | #020611 | 0.008 |
| Deuteranopia (no green cones) | #000511 | 0.005 |
| Tritanopia (no blue cones) | #000709 | 0.025 |
| Achromatopsia (no color) | #050505 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010511
#010511
oklch(11.7% 0.033 258.4)
- #090400
#090400
oklch(11.4% 0.024 77.4)
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 #010511, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.046
- Rich Navy #001219 ΔE 0.056
- Midnight #03012D ΔE 0.062
- Dark Navy Blue #00022E ΔE 0.063
- Very Dark Blue #000133 ΔE 0.073
- Dark Navy #000435 ΔE 0.076
- Very Dark Brown #1D0200 ΔE 0.088
- Rich Black #0D1B2A ΔE 0.101
Use #010511 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.