#000308
Closest named color: Almost Black (#070D0D). oklch(9.3% 0.023 244.3), rgb(0, 3, 8).
Aa
White text reads best on this color (20.65:1).
About this color
#000308 is a very dark close to neutral grey. In OKLCH its lightness is 9%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.062 away. White text reads best on it, at 20.65:1.
| Hue family | Neutrals |
| Lightness | very dark (9%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.01:1 |
| White text | 20.65:1 |
Values
| HEX | #000308 |
| RGB | rgb(0, 3, 8) |
| HSL | hsl(218, 100%, 2%) |
| OKLCH | oklch(9.3% 0.023 244.3) |
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 #000308 | 20.65:1 | AAA | Lc -107.9 | Preferred for body text |
| Black text on #000308 | 1.01:1 | Fails | Lc 0.0 | Not readable |
| #000308 text on white | 20.65:1 | AAA | Lc 106.0 | Preferred for body text |
| #000308 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE3
oklch(88.4% 0.016 248)
-
Step 300
300
#B2C3D1
oklch(80.9% 0.027 242.8)
-
Step 400
400
#8AA4BB
oklch(70.7% 0.045 245.2)
-
Step 500
500
#6D8EA9
oklch(63.2% 0.055 243.5)
-
Step 600
600
#547795
oklch(55.5% 0.062 245.1)
-
Step 700
700
#44647F
oklch(49% 0.057 244.8)
-
Step 800
800
#395267
oklch(42.7% 0.046 244.5)
-
Step 900
900
#314454
oklch(37.7% 0.037 244.4)
-
Step 950
950 (this color)
#000308
oklch(9.3% 0.023 244.3)
#000308 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) | #020308 | 0.012 |
| Deuteranopia (no green cones) | #010208 | 0.011 |
| Tritanopia (no blue cones) | #000405 | 0.014 |
| Achromatopsia (no color) | #030303 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #000308
#000308
oklch(9.3% 0.023 244.3)
- #060200
#060200
oklch(9.5% 0.021 66.2)
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 #000308, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.062
- Rich Navy #001219 ΔE 0.077
- Midnight #03012D ΔE 0.084
- Dark Navy Blue #00022E ΔE 0.084
- Very Dark Brown #1D0200 ΔE 0.095
- Very Dark Blue #000133 ΔE 0.095
- Black #000000 ΔE 0.096
- Dark Navy #000435 ΔE 0.100
Use #000308 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.