#2D4F81
Closest named color: Light Navy (#155084). oklch(42.7% 0.093 258), rgb(45, 79, 129).
Aa
White text reads best on this color (8.24:1).
About this color
#2D4F81 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.093 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.24:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.54:1 |
| White text | 8.24:1 |
Values
| HEX | #2D4F81 |
| RGB | rgb(45, 79, 129) |
| HSL | hsl(216, 48%, 34%) |
| OKLCH | oklch(42.7% 0.093 258) |
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 #2D4F81 | 8.24:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #2D4F81 | 2.54:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #2D4F81 text on white | 8.24:1 | AAA | Lc 88.3 | Fine for body text |
| #2D4F81 text on black | 2.54:1 | Fails | Lc -13.9 | 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
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC2E4
oklch(80.8% 0.054 258)
-
Step 400
400
#7FA2D7
oklch(70.7% 0.087 258.5)
-
Step 500
500
#5E8ACC
oklch(63% 0.111 258.3)
-
Step 600
600
#4473B9
oklch(55.6% 0.121 258.2)
-
Step 700
700
#36609F
oklch(49% 0.112 258.3)
-
Step 800
800 (this color)
#2D4F81
oklch(42.7% 0.093 258)
-
Step 900
900
#284267
oklch(37.7% 0.071 257.3)
-
Step 950
950
#18273D
oklch(27.1% 0.046 257.8)
#2D4F81 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) | #395383 | 0.020 |
| Deuteranopia (no green cones) | #2E4B80 | 0.012 |
| Tritanopia (no blue cones) | #005A62 | 0.075 |
| Achromatopsia (no color) | #4F4F4F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4F81
#2D4F81
oklch(42.7% 0.093 258)
- #694800
#694800
oklch(42.7% 0.089 78.7)
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 #2D4F81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.021
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.033
- Cobalt #1E488F ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.046
- Dusk #4E5481 ΔE 0.047
- Twilight #4E518B ΔE 0.048
Use #2D4F81 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.