#2F517F
Closest named color: Light Navy (#155084). oklch(43.2% 0.086 256.4), rgb(47, 81, 127).
Aa
White text reads best on this color (8.06:1).
About this color
#2F517F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.086 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.023 away. White text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.60:1 |
| White text | 8.06:1 |
Values
| HEX | #2F517F |
| RGB | rgb(47, 81, 127) |
| HSL | hsl(215, 46%, 34%) |
| OKLCH | oklch(43.2% 0.086 256.4) |
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 #2F517F | 8.06:1 | AAA | Lc -92.4 | Preferred for body text |
| Black text on #2F517F | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #2F517F text on white | 8.06:1 | AAA | Lc 87.8 | Fine for body text |
| #2F517F text on black | 2.60:1 | Fails | Lc -14.4 | 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
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAEC
oklch(88.4% 0.029 256.5)
-
Step 300
300
#ACC3E2
oklch(81% 0.051 255.9)
-
Step 400
400
#80A3D3
oklch(70.8% 0.081 256.4)
-
Step 500
500
#5F8BC7
oklch(63% 0.103 256.4)
-
Step 600
600
#4574B4
oklch(55.5% 0.113 256.5)
-
Step 700
700
#37619B
oklch(49.1% 0.105 256.8)
-
Step 800
800 (this color)
#2F517F
oklch(43.2% 0.086 256.4)
-
Step 900
900
#294265
oklch(37.6% 0.068 257)
-
Step 950
950
#18273B
oklch(27% 0.043 255.9)
#2F517F 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) | #3E5481 | 0.021 |
| Deuteranopia (no green cones) | #334D7E | 0.012 |
| Tritanopia (no blue cones) | #005B62 | 0.072 |
| Achromatopsia (no color) | #505050 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F517F
#2F517F
oklch(43.2% 0.086 256.4)
- #6B4909
#6B4909
oklch(43.3% 0.086 76.5)
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 #2F517F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.023
- Dusk Blue #26538D ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.041
- Dusk #4E5481 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.043
- Cobalt #1E488F ΔE 0.045
Use #2F517F 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.