#2F4E79
Closest named color: Light Navy (#155084). oklch(42.1% 0.081 256.8), rgb(47, 78, 121).
Aa
White text reads best on this color (8.44:1).
About this color
#2F4E79 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.081 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.026 away. White text reads best on it, at 8.44:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.48:1 |
| White text | 8.44:1 |
Values
| HEX | #2F4E79 |
| RGB | rgb(47, 78, 121) |
| HSL | hsl(215, 44%, 33%) |
| OKLCH | oklch(42.1% 0.081 256.8) |
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 #2F4E79 | 8.44:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #2F4E79 | 2.48:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #2F4E79 text on white | 8.44:1 | AAA | Lc 88.9 | Fine for body text |
| #2F4E79 text on black | 2.48:1 | Fails | Lc -13.3 | 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
#ADC2E0
oklch(80.8% 0.048 257.3)
-
Step 400
400
#82A3D0
oklch(70.8% 0.076 256.3)
-
Step 500
500
#638BC4
oklch(63.1% 0.097 257.3)
-
Step 600
600
#4974B0
oklch(55.5% 0.106 256.9)
-
Step 700
700
#3A6197
oklch(49% 0.098 256.8)
-
Step 800
800 (this color)
#2F4E79
oklch(42.1% 0.081 256.8)
-
Step 900
900
#2B4263
oklch(37.6% 0.064 257.4)
-
Step 950
950
#19273A
oklch(27% 0.041 256.3)
#2F4E79 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) | #3C517B | 0.020 |
| Deuteranopia (no green cones) | #324A78 | 0.012 |
| Tritanopia (no blue cones) | #00585E | 0.070 |
| Achromatopsia (no color) | #4D4D4D | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4E79
#2F4E79
oklch(42.1% 0.081 256.8)
- #66470E
#66470E
oklch(42.2% 0.081 77.3)
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 #2F4E79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.032
- Dusk Blue #26538D ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.046
- Cobalt #1E488F ΔE 0.047
- Dusk #4E5481 ΔE 0.049
- Twilight Blue #0A437A ΔE 0.049
Use #2F4E79 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.