#0A121D
Closest named color: Rich Navy (#001219). oklch(18% 0.026 256.5), rgb(10, 18, 29).
Aa
White text reads best on this color (18.79:1).
About this color
#0A121D is a very dark close to neutral grey. In OKLCH its lightness is 18%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Rich Navy (#001219), ΔE 0.021 away. White text reads best on it, at 18.79:1.
| Hue family | Neutrals |
| Lightness | very dark (18%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.79:1 |
Values
| HEX | #0A121D |
| RGB | rgb(10, 18, 29) |
| HSL | hsl(215, 49%, 8%) |
| OKLCH | oklch(18% 0.026 256.5) |
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 #0A121D | 18.79:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #0A121D | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #0A121D text on white | 18.79:1 | AAA | Lc 105.3 | Preferred for body text |
| #0A121D text on black | 1.11:1 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B4C2D5
oklch(80.9% 0.031 256)
-
Step 400
400
#8DA2C0
oklch(70.6% 0.05 257.3)
-
Step 500
500
#718BB0
oklch(63.1% 0.064 257.2)
-
Step 600
600
#59759B
oklch(55.6% 0.068 256.2)
-
Step 700
700
#496285
oklch(49.1% 0.064 256.9)
-
Step 800
800
#3C506C
oklch(42.7% 0.053 256.9)
-
Step 900
900
#334357
oklch(37.8% 0.04 254.3)
-
Step 950
950 (this color)
#0A121D
oklch(18% 0.026 256.5)
#0A121D 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) | #0E131D | 0.008 |
| Deuteranopia (no green cones) | #0C111D | 0.005 |
| Tritanopia (no blue cones) | #041416 | 0.022 |
| Achromatopsia (no color) | #121212 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A121D
#0A121D
oklch(18% 0.026 256.5)
- #181005
#181005
oklch(18% 0.025 76.2)
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 #0A121D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.021
- Almost Black #070D0D ΔE 0.036
- Rich Black #0D1B2A ΔE 0.039
- Dark Navy #000435 ΔE 0.073
- Midnight #03012D ΔE 0.074
- Dark Navy Blue #00022E ΔE 0.074
- Dark #1B2431 ΔE 0.078
- Very Dark Blue #000133 ΔE 0.080
Use #0A121D 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.