Marine Blue #01386A
Marine Blue is a dark, moderately saturated blue with hex code #01386A and RGB rgb(1, 56, 106).
Aa
White text reads best on this color (11.83:1).
About this color
#01386A is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.102 and its hue 252°. Its hue sits on the cool side of the wheel. It is the named color Marine Blue. White text reads best on it, at 11.83:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Marine Blue |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Colors that go with Marine Blue
Matches found by rotating Marine Blue around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Marine Blue
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Marine Blue, closest first.
Similar named colors
The eight named colors closest to Marine Blue, with their ΔE distance.
- Marine #042E60 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.036
- Twilight Blue #0A437A ΔE 0.042
- Midnight Green #073B4C ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.067
- Charcoal #264653 ΔE 0.074
- Gunmetal #293241 ΔE 0.076
More about Marine Blue
How to make Marine Blue
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 4 parts blue
- 3 parts purple
- 1 part black
Recipe result: #2F3C63, a difference of ΔE 0.047 from Marine Blue. That is close; add a little more of one paint to match.
Codes for Marine Blue in every format
| HEX | #01386A |
| RGB | rgb(1, 56, 106) |
| HSL | hsl(209, 98%, 21%) |
| OKLCH | oklch(33.9% 0.102 252.3) |
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 #01386A | 11.83:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #01386A | 1.77:1 | Fails | Lc 7.3 | Not readable |
| #01386A text on white | 11.83:1 | AAA | Lc 96.6 | Preferred for body text |
| #01386A text on black | 1.77:1 | Fails | Lc 0.0 | Not readable |
Shades and tints of Marine Blue
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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC4F1
oklch(80.8% 0.076 252.3)
-
Step 400
400
#66A4EA
oklch(70.6% 0.122 252.5)
-
Step 500
500
#378CE4
oklch(63.2% 0.155 252.3)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F93
oklch(42.7% 0.13 252.6)
-
Step 900
900 (this color)
#01386A
oklch(33.9% 0.102 252.3)
-
Step 950
950
#0B2745
oklch(26.9% 0.065 252.8)
Marine Blue 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) | #1D3C6C | 0.025 |
| Deuteranopia (no green cones) | #043369 | 0.015 |
| Tritanopia (no blue cones) | #00444B | 0.075 |
| Achromatopsia (no color) | #373737 | 0.102 |
Use Marine Blue 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.