#2D3351
Closest named color: Prussian Blue (#1D3557). oklch(33% 0.054 274.5), rgb(45, 51, 81).
Aa
White text reads best on this color (12.32:1).
About this color
#2D3351 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.054 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.023 away. White text reads best on it, at 12.32:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.32:1 |
Values
| HEX | #2D3351 |
| RGB | rgb(45, 51, 81) |
| HSL | hsl(230, 29%, 25%) |
| OKLCH | oklch(33% 0.054 274.5) |
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 #2D3351 | 12.32:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #2D3351 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #2D3351 text on white | 12.32:1 | AAA | Lc 98.0 | Preferred for body text |
| #2D3351 text on black | 1.70:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E8
oklch(88.4% 0.022 274.7)
-
Step 300
300
#B8BFDB
oklch(80.8% 0.04 274.4)
-
Step 400
400
#949EC9
oklch(70.7% 0.064 274.5)
-
Step 500
500
#7A86BC
oklch(63.2% 0.083 274.2)
-
Step 600
600
#636FA8
oklch(55.6% 0.09 274.1)
-
Step 700
700
#525D90
oklch(49.2% 0.083 273.7)
-
Step 800
800
#444C75
oklch(42.8% 0.069 274.7)
-
Step 900
900 (this color)
#2D3351
oklch(33% 0.054 274.5)
-
Step 950
950
#212537
oklch(26.9% 0.034 274.3)
#2D3351 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) | #293652 | 0.010 |
| Deuteranopia (no green cones) | #263350 | 0.011 |
| Tritanopia (no blue cones) | #22393E | 0.048 |
| Achromatopsia (no color) | #353535 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3351
#2D3351
oklch(33% 0.054 274.5)
- #3E3511
#3E3511
oklch(33% 0.054 95.2)
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 #2D3351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.023
- Gunmetal #293241 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.033
- Onyx #343A40 ΔE 0.045
- Midnight Green #073B4C ΔE 0.047
- Marine #042E60 ΔE 0.056
- Marine Blue #01386A ΔE 0.056
Use #2D3351 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.