#2F517D
Closest named color: Light Navy (#155084). oklch(43.1% 0.084 255.5), rgb(47, 81, 125).
Aa
White text reads best on this color (8.09:1).
About this color
#2F517D is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.084 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.024 away. White text reads best on it, at 8.09:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.59:1 |
| White text | 8.09:1 |
Values
| HEX | #2F517D |
| RGB | rgb(47, 81, 125) |
| HSL | hsl(214, 45%, 34%) |
| OKLCH | oklch(43.1% 0.084 255.5) |
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 #2F517D | 8.09:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #2F517D | 2.59:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #2F517D text on white | 8.09:1 | AAA | Lc 87.9 | Fine for body text |
| #2F517D text on black | 2.59:1 | Fails | Lc -14.3 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CEDAEB
oklch(88.4% 0.027 257)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#80A3D1
oklch(70.7% 0.078 255.5)
-
Step 500
500
#608CC5
oklch(63.2% 0.099 255.3)
-
Step 600
600
#4675B2
oklch(55.7% 0.109 255.6)
-
Step 700
700
#376299
oklch(49.2% 0.101 255.4)
-
Step 800
800 (this color)
#2F517D
oklch(43.1% 0.084 255.5)
-
Step 900
900
#294364
oklch(37.8% 0.065 255)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#2F517D 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) | #3E547F | 0.021 |
| Deuteranopia (no green cones) | #344C7C | 0.015 |
| Tritanopia (no blue cones) | #005B61 | 0.070 |
| Achromatopsia (no color) | #505050 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F517D
#2F517D
oklch(43.1% 0.084 255.5)
- #6A480E
#6A480E
oklch(42.9% 0.084 75.1)
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 #2F517D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.024
- Dusk Blue #26538D ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.040
- Dusk #4E5481 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.045
- Cobalt #1E488F ΔE 0.047
Use #2F517D 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.