#0D517D
Closest named color: Deep Sea Blue (#015482). oklch(41.9% 0.096 243.9), rgb(13, 81, 125).
Aa
White text reads best on this color (8.43:1).
About this color
#0D517D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.096 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.011 away. White text reads best on it, at 8.43:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.49:1 |
| White text | 8.43:1 |
Values
| HEX | #0D517D |
| RGB | rgb(13, 81, 125) |
| HSL | hsl(204, 81%, 27%) |
| OKLCH | oklch(41.9% 0.096 243.9) |
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 #0D517D | 8.43:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #0D517D | 2.49:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #0D517D text on white | 8.43:1 | AAA | Lc 88.6 | Fine for body text |
| #0D517D text on black | 2.49:1 | Fails | Lc -13.6 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C8DCED
oklch(88.5% 0.032 243.7)
-
Step 300
300
#A2C5E3
oklch(80.8% 0.057 244.4)
-
Step 400
400
#6EA7D5
oklch(70.7% 0.09 243.9)
-
Step 500
500
#4490CA
oklch(63.1% 0.115 244.2)
-
Step 600
600
#1D79B7
oklch(55.5% 0.126 244.3)
-
Step 700
700
#0C669D
oklch(49.1% 0.116 243.7)
-
Step 800
800 (this color)
#0D517D
oklch(41.9% 0.096 243.9)
-
Step 900
900
#184566
oklch(37.6% 0.075 244.1)
-
Step 950
950
#0F293C
oklch(27.1% 0.048 243)
#0D517D 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) | #3C537F | 0.042 |
| Deuteranopia (no green cones) | #2C497C | 0.030 |
| Tritanopia (no blue cones) | #005C61 | 0.067 |
| Achromatopsia (no color) | #4D4D4D | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D517D
#0D517D
oklch(41.9% 0.096 243.9)
- #703F00
#703F00
oklch(41.8% 0.095 63.3)
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 #0D517D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.011
- Light Navy #155084 ΔE 0.014
- Dusk Blue #26538D ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.043
- Cobalt #1E488F ΔE 0.044
- YInMn Blue #415A77 ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.060
Use #0D517D 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.