#2F4F73
Closest named color: Light Navy (#155084). oklch(42% 0.071 252.4), rgb(47, 79, 115).
Aa
White text reads best on this color (8.44:1).
About this color
#2F4F73 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.071 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.033 away. White text reads best on it, at 8.44:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #2F4F73 |
| RGB | rgb(47, 79, 115) |
| HSL | hsl(212, 42%, 32%) |
| OKLCH | oklch(42% 0.071 252.4) |
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 #2F4F73 | 8.44:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #2F4F73 | 2.48:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #2F4F73 text on white | 8.44:1 | AAA | Lc 89.0 | Fine for body text |
| #2F4F73 text on black | 2.48:1 | Fails | Lc -13.2 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AEC3DB
oklch(80.9% 0.041 251.8)
-
Step 400
400
#83A4CA
oklch(70.8% 0.067 252.3)
-
Step 500
500
#638DBC
oklch(63.2% 0.085 251.9)
-
Step 600
600
#4A76A8
oklch(55.6% 0.092 252.6)
-
Step 700
700
#3B6390
oklch(49.1% 0.086 252.5)
-
Step 800
800 (this color)
#2F4F73
oklch(42% 0.071 252.4)
-
Step 900
900
#2B435E
oklch(37.6% 0.055 252.2)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#2F4F73 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) | #405175 | 0.023 |
| Deuteranopia (no green cones) | #374A72 | 0.017 |
| Tritanopia (no blue cones) | #00575C | 0.061 |
| Achromatopsia (no color) | #4D4D4D | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4F73
#2F4F73
oklch(42% 0.071 252.4)
- #65461C
#65461C
oklch(42% 0.071 71.8)
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 #2F4F73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.033
- Deep Sea Blue #015482 ΔE 0.035
- Dusk Blue #26538D ΔE 0.043
- YInMn Blue #415A77 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Dusk #4E5481 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.054
Use #2F4F73 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.