#2F537C
Closest named color: Light Navy Blue (#2E5A88). oklch(43.5% 0.08 252.9), rgb(47, 83, 124).
Aa
White text reads best on this color (7.92:1).
About this color
#2F537C is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.080 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.026 away. White text reads best on it, at 7.92:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #2F537C |
| RGB | rgb(47, 83, 124) |
| HSL | hsl(212, 45%, 34%) |
| OKLCH | oklch(43.5% 0.08 252.9) |
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 #2F537C | 7.92:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #2F537C | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #2F537C text on white | 7.92:1 | AAA | Lc 87.3 | Fine for body text |
| #2F537C text on black | 2.64:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ACC3DF
oklch(80.9% 0.047 253.5)
-
Step 400
400
#7FA4CF
oklch(70.7% 0.075 252.6)
-
Step 500
500
#5E8DC2
oklch(63.2% 0.095 252.3)
-
Step 600
600
#4476AE
oklch(55.6% 0.103 252.5)
-
Step 700
700
#356396
oklch(49.1% 0.097 252.5)
-
Step 800
800 (this color)
#2F537C
oklch(43.5% 0.08 252.9)
-
Step 900
900
#284362
oklch(37.6% 0.063 252.8)
-
Step 950
950
#182739
oklch(26.8% 0.04 253.6)
#2F537C 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) | #42557E | 0.025 |
| Deuteranopia (no green cones) | #384E7B | 0.017 |
| Tritanopia (no blue cones) | #005C62 | 0.066 |
| Achromatopsia (no color) | #515151 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F537C
#2F537C
oklch(43.5% 0.08 252.9)
- #6C4916
#6C4916
oklch(43.5% 0.081 72.3)
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 #2F537C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.026
- Light Navy #155084 ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.028
- Dusk Blue #26538D ΔE 0.029
- YInMn Blue #415A77 ΔE 0.034
- Dusk #4E5481 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.044
- Twilight #4E518B ΔE 0.049
Use #2F537C 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.