#2E3351
Closest named color: Prussian Blue (#1D3557). oklch(33.1% 0.053 275.9), rgb(46, 51, 81).
Aa
White text reads best on this color (12.29:1).
About this color
#2E3351 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.053 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.024 away. White text reads best on it, at 12.29:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.29:1 |
Values
| HEX | #2E3351 |
| RGB | rgb(46, 51, 81) |
| HSL | hsl(231, 28%, 25%) |
| OKLCH | oklch(33.1% 0.053 275.9) |
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 #2E3351 | 12.29:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #2E3351 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #2E3351 text on white | 12.29:1 | AAA | Lc 98.0 | Preferred for body text |
| #2E3351 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
#D5D8E8
oklch(88.5% 0.022 277.5)
-
Step 300
300
#B9BFDB
oklch(80.9% 0.04 275.9)
-
Step 400
400
#959EC9
oklch(70.7% 0.064 275.4)
-
Step 500
500
#7C85BB
oklch(63.1% 0.082 276.5)
-
Step 600
600
#656EA7
oklch(55.5% 0.089 276.2)
-
Step 700
700
#545C90
oklch(49.1% 0.084 276.2)
-
Step 800
800
#454B74
oklch(42.6% 0.068 276.7)
-
Step 900
900 (this color)
#2E3351
oklch(33.1% 0.053 275.9)
-
Step 950
950
#222537
oklch(27% 0.034 276.6)
#2E3351 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 | 0.011 |
| Deuteranopia (no green cones) | #263450 | 0.012 |
| Tritanopia (no blue cones) | #23393E | 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°).
- #2E3351
#2E3351
oklch(33.1% 0.053 275.9)
- #3E3512
#3E3512
oklch(33% 0.053 94.9)
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 #2E3351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Gunmetal #293241 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.034
- Onyx #343A40 ΔE 0.045
- Midnight Green #073B4C ΔE 0.048
- Marine Blue #01386A ΔE 0.057
- Marine #042E60 ΔE 0.057
Use #2E3351 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.