#013369
Closest named color: Marine Blue (#01386A). oklch(32.6% 0.107 255.1), rgb(1, 51, 105).
Aa
White text reads best on this color (12.50:1).
About this color
#013369 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.107 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.015 away. White text reads best on it, at 12.50:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.67:1 |
| White text | 12.50:1 |
Values
| HEX | #013369 |
| RGB | rgb(1, 51, 105) |
| HSL | hsl(211, 98%, 21%) |
| OKLCH | oklch(32.6% 0.107 255.1) |
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 #013369 | 12.50:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #013369 | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #013369 text on white | 12.50:1 | AAA | Lc 97.8 | Preferred for body text |
| #013369 text on black | 1.67:1 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9EC4F4
oklch(81% 0.08 254.5)
-
Step 400
400
#68A3EF
oklch(70.7% 0.128 255.3)
-
Step 500
500
#3B8AE9
oklch(63.2% 0.162 255)
-
Step 600
600
#0E71D8
oklch(55.6% 0.178 255.2)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#064D97
oklch(42.6% 0.137 255.2)
-
Step 900
900 (this color)
#013369
oklch(32.6% 0.107 255.1)
-
Step 950
950
#0C2746
oklch(27.1% 0.066 254)
#013369 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) | #12386B | 0.020 |
| Deuteranopia (no green cones) | #003068 | 0.009 |
| Tritanopia (no blue cones) | #004049 | 0.078 |
| Achromatopsia (no color) | #343434 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #013369
#013369
oklch(32.6% 0.107 255.1)
- #482E00
#482E00
oklch(32.5% 0.068 75.2)
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 #013369, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.015
- Marine #042E60 ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.039
- Twilight Blue #0A437A ΔE 0.055
- Midnight Green #073B4C ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.065
- Midnight Blue #191970 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.077
Use #013369 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.