#2F537D
Closest named color: Light Navy Blue (#2E5A88). oklch(43.6% 0.081 253.4), rgb(47, 83, 125).
Aa
White text reads best on this color (7.91:1).
About this color
#2F537D is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.081 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.025 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #2F537D |
| RGB | rgb(47, 83, 125) |
| HSL | hsl(212, 45%, 34%) |
| OKLCH | oklch(43.6% 0.081 253.4) |
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 #2F537D | 7.91:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #2F537D | 2.65:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #2F537D text on white | 7.91:1 | AAA | Lc 87.3 | Fine for body text |
| #2F537D text on black | 2.65:1 | Fails | Lc -14.8 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ACC3DF
oklch(80.9% 0.047 253.5)
-
Step 400
400
#7FA4D0
oklch(70.8% 0.077 253.2)
-
Step 500
500
#5E8CC3
oklch(63% 0.098 253.6)
-
Step 600
600
#4476B0
oklch(55.7% 0.106 253.3)
-
Step 700
700
#356397
oklch(49.2% 0.098 252.9)
-
Step 800
800 (this color)
#2F537D
oklch(43.6% 0.081 253.4)
-
Step 900
900
#284363
oklch(37.7% 0.064 253.6)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#2F537D 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) | #41557F | 0.023 |
| Deuteranopia (no green cones) | #374E7C | 0.016 |
| Tritanopia (no blue cones) | #005D62 | 0.069 |
| Achromatopsia (no color) | #515151 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F537D
#2F537D
oklch(43.6% 0.081 253.4)
- #6C4915
#6C4915
oklch(43.5% 0.081 72.7)
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 #2F537D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.025
- Light Navy #155084 ΔE 0.027
- Dusk Blue #26538D ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.028
- YInMn Blue #415A77 ΔE 0.035
- Dusk #4E5481 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Twilight #4E518B ΔE 0.048
Use #2F537D 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.