#0C3366
Closest named color: Marine Blue (#01386A). oklch(32.6% 0.099 257), rgb(12, 51, 102).
Aa
White text reads best on this color (12.49:1).
About this color
#0C3366 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.099 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.016 away. White text reads best on it, at 12.49:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.68:1 |
| White text | 12.49:1 |
Values
| HEX | #0C3366 |
| RGB | rgb(12, 51, 102) |
| HSL | hsl(214, 79%, 22%) |
| OKLCH | oklch(32.6% 0.099 257) |
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 #0C3366 | 12.49:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #0C3366 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #0C3366 text on white | 12.49:1 | AAA | Lc 98.0 | Preferred for body text |
| #0C3366 text on black | 1.68:1 | 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 900.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F1
oklch(80.9% 0.075 256.7)
-
Step 400
400
#6FA2EA
oklch(70.6% 0.119 257.1)
-
Step 500
500
#4889E4
oklch(63.1% 0.153 257.3)
-
Step 600
600
#2771D2
oklch(55.6% 0.166 257)
-
Step 700
700
#1A5EB6
oklch(49.2% 0.154 257.1)
-
Step 800
800
#184D93
oklch(42.7% 0.128 257.1)
-
Step 900
900 (this color)
#0C3366
oklch(32.6% 0.099 257)
-
Step 950
950
#112645
oklch(27% 0.064 258.1)
#0C3366 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) | #163868 | 0.019 |
| Deuteranopia (no green cones) | #003065 | 0.013 |
| Tritanopia (no blue cones) | #003F47 | 0.075 |
| Achromatopsia (no color) | #343434 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C3366
#0C3366
oklch(32.6% 0.099 257)
- #482F00
#482F00
oklch(32.7% 0.068 76.8)
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 #0C3366, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.016
- Marine #042E60 ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.032
- Twilight Blue #0A437A ΔE 0.056
- Midnight Green #073B4C ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.059
- Midnight Blue #191970 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.070
Use #0C3366 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.