#00386C
Closest named color: Marine Blue (#01386A). oklch(34.1% 0.105 252.9), rgb(0, 56, 108).
Aa
White text reads best on this color (11.78:1).
About this color
#00386C is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.105 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.003 away. White text reads best on it, at 11.78:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.78:1 |
Values
| HEX | #00386C |
| RGB | rgb(0, 56, 108) |
| HSL | hsl(209, 100%, 21%) |
| OKLCH | oklch(34.1% 0.105 252.9) |
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 #00386C | 11.78:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #00386C | 1.78:1 | Fails | Lc 7.4 | Not readable |
| #00386C text on white | 11.78:1 | AAA | Lc 96.5 | Preferred for body text |
| #00386C text on black | 1.78:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C5DCF6
oklch(88.6% 0.044 251.5)
-
Step 300
300
#9DC4F3
oklch(80.9% 0.079 253.4)
-
Step 400
400
#65A4ED
oklch(70.7% 0.126 253.2)
-
Step 500
500
#348BE7
oklch(63.1% 0.161 252.9)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0061B3
oklch(49.2% 0.151 252.8)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900 (this color)
#00386C
oklch(34.1% 0.105 252.9)
-
Step 950
950
#0B2746
oklch(27% 0.067 253.4)
#00386C 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) | #1B3D6E | 0.026 |
| Deuteranopia (no green cones) | #00336B | 0.015 |
| Tritanopia (no blue cones) | #00454C | 0.078 |
| Achromatopsia (no color) | #383838 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00386C
#00386C
oklch(34.1% 0.105 252.9)
- #4F3100
#4F3100
oklch(34.1% 0.073 72.4)
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 #00386C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.003
- Marine #042E60 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.040
- Midnight Green #073B4C ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.069
- Charcoal #264653 ΔE 0.077
Use #00386C 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.