#13347A
Closest named color: Marine Blue (#01386A). oklch(34.8% 0.126 262.7), rgb(19, 52, 122).
Aa
White text reads best on this color (11.66:1).
About this color
#13347A is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.126 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.033 away. White text reads best on it, at 11.66:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.66:1 |
Values
| HEX | #13347A |
| RGB | rgb(19, 52, 122) |
| HSL | hsl(221, 73%, 28%) |
| OKLCH | oklch(34.8% 0.126 262.7) |
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 #13347A | 11.66:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #13347A | 1.79:1 | Fails | Lc 7.6 | Not readable |
| #13347A text on white | 11.66:1 | AAA | Lc 96.3 | Preferred for body text |
| #13347A text on black | 1.79:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFD
oklch(88.5% 0.053 262.7)
-
Step 300
300
#A0C1FE
oklch(80.9% 0.094 262.4)
-
Step 400
400
#6D9EFE
oklch(70.7% 0.151 262.7)
-
Step 500
500
#4782FC
oklch(63.1% 0.192 262.8)
-
Step 600
600
#2A67EB
oklch(55.5% 0.209 262.8)
-
Step 700
700
#1D55CD
oklch(49.2% 0.195 262.7)
-
Step 800
800
#1A46A5
oklch(42.6% 0.161 262.8)
-
Step 900
900 (this color)
#13347A
oklch(34.8% 0.126 262.7)
-
Step 950
950
#10244D
oklch(27% 0.08 262.7)
#13347A 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) | #003D7C | 0.025 |
| Deuteranopia (no green cones) | #003479 | 0.012 |
| Tritanopia (no blue cones) | #004551 | 0.097 |
| Achromatopsia (no color) | #383838 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13347A
#13347A
oklch(34.8% 0.126 262.7)
- #4C3600
#4C3600
oklch(34.9% 0.072 83.2)
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 #13347A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.033
- Twilight Blue #0A437A ΔE 0.043
- Marine #042E60 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.062
- Cobalt #1E488F ΔE 0.066
- Midnight Blue #191970 ΔE 0.067
- Royal #0C1793 ΔE 0.072
- Light Navy #155084 ΔE 0.082
Use #13347A 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.