#2D5781
Closest named color: Light Navy Blue (#2E5A88). oklch(44.7% 0.084 250.2), rgb(45, 87, 129).
Aa
White text reads best on this color (7.52:1).
About this color
#2D5781 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.084 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.013 away. White text reads best on it, at 7.52:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.79:1 |
| White text | 7.52:1 |
Values
| HEX | #2D5781 |
| RGB | rgb(45, 87, 129) |
| HSL | hsl(210, 48%, 34%) |
| OKLCH | oklch(44.7% 0.084 250.2) |
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 #2D5781 | 7.52:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #2D5781 | 2.79:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #2D5781 text on white | 7.52:1 | AAA | Lc 86.0 | Fine for body text |
| #2D5781 text on black | 2.79:1 | Fails | Lc -16.1 | Dividers and decoration only |
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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#A9C4E0
oklch(80.9% 0.049 249.4)
-
Step 400
400
#7BA5D0
oklch(70.8% 0.078 249.6)
-
Step 500
500
#588EC4
oklch(63.2% 0.1 249.7)
-
Step 600
600
#3D77B0
oklch(55.6% 0.108 250)
-
Step 700
700
#2E6498
oklch(49.2% 0.101 249.9)
-
Step 800
800 (this color)
#2D5781
oklch(44.7% 0.084 250.2)
-
Step 900
900
#254463
oklch(37.8% 0.065 249.9)
-
Step 950
950
#16283A
oklch(27.1% 0.041 249.6)
#2D5781 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) | #455983 | 0.030 |
| Deuteranopia (no green cones) | #3A5180 | 0.021 |
| Tritanopia (no blue cones) | #006166 | 0.067 |
| Achromatopsia (no color) | #545454 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D5781
#2D5781
oklch(44.7% 0.084 250.2)
- #724B17
#724B17
oklch(44.7% 0.084 69.7)
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 #2D5781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.013
- Dusk Blue #26538D ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.031
- Light Navy #155084 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.034
- Dusk #4E5481 ΔE 0.041
- Denim #3B638C ΔE 0.042
Use #2D5781 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.