#010310
Closest named color: Almost Black (#070D0D). oklch(10.5% 0.037 265.8), rgb(1, 3, 16).
Aa
White text reads best on this color (20.55:1).
About this color
#010310 is a very dark, muted blue. In OKLCH its lightness is 10%, its chroma 0.037 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.059 away. White text reads best on it, at 20.55:1.
| Hue family | Blues |
| Lightness | very dark (10%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.02:1 |
| White text | 20.55:1 |
Values
| HEX | #010310 |
| RGB | rgb(1, 3, 16) |
| HSL | hsl(232, 88%, 3%) |
| OKLCH | oklch(10.5% 0.037 265.8) |
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 #010310 | 20.55:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #010310 | 1.02:1 | Fails | Lc 0.0 | Not readable |
| #010310 text on white | 20.55:1 | AAA | Lc 106.0 | Preferred for body text |
| #010310 text on black | 1.02:1 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B3C1DE
oklch(81% 0.044 264.9)
-
Step 400
400
#8CA0CD
oklch(70.7% 0.07 266)
-
Step 500
500
#7088C0
oklch(63.1% 0.089 266.1)
-
Step 600
600
#5871AC
oklch(55.5% 0.097 265.9)
-
Step 700
700
#485F94
oklch(49.1% 0.09 265.4)
-
Step 800
800
#3B4E78
oklch(42.8% 0.074 264.9)
-
Step 900
900
#334161
oklch(37.8% 0.058 265.6)
-
Step 950
950 (this color)
#010310
oklch(10.5% 0.037 265.8)
#010310 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) | #000411 | 0.008 |
| Deuteranopia (no green cones) | #000310 | 0.006 |
| Tritanopia (no blue cones) | #000507 | 0.029 |
| Achromatopsia (no color) | #040404 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #010310
#010310
oklch(10.5% 0.037 265.8)
- #060300
#060300
oklch(10.2% 0.021 82.3)
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 #010310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.059
- Midnight #03012D ΔE 0.063
- Dark Navy Blue #00022E ΔE 0.065
- Rich Navy #001219 ΔE 0.069
- Very Dark Blue #000133 ΔE 0.075
- Dark Navy #000435 ΔE 0.080
- Very Dark Brown #1D0200 ΔE 0.094
- Black #000000 ΔE 0.111
Use #010310 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.