#2B2D55
Closest named color: Prussian Blue (#1D3557). oklch(31.7% 0.071 279.4), rgb(43, 45, 85).
Aa
White text reads best on this color (13.04:1).
About this color
#2B2D55 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.071 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 13.04:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.60:1 |
| White text | 13.04:1 |
Values
| HEX | #2B2D55 |
| RGB | rgb(43, 45, 85) |
| HSL | hsl(237, 33%, 25%) |
| OKLCH | oklch(31.7% 0.071 279.4) |
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 #2B2D55 | 13.04:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #2B2D55 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #2B2D55 text on white | 13.04:1 | AAA | Lc 99.2 | Preferred for body text |
| #2B2D55 text on black | 1.60:1 | 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 950.
-
Step 50
50
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9FA
oklch(93.7% 0.023 277.9)
-
Step 200
200
#D2D7F8
oklch(88.6% 0.046 278.6)
-
Step 300
300
#B5BBF6
oklch(80.8% 0.084 279.8)
-
Step 400
400
#9096F2
oklch(70.7% 0.134 279.5)
-
Step 500
500
#7779EE
oklch(63.1% 0.172 279.5)
-
Step 600
600
#615FDC
oklch(55.6% 0.186 279.2)
-
Step 700
700
#514DBF
oklch(49.1% 0.173 279.4)
-
Step 800
800
#42409A
oklch(42.6% 0.143 279.4)
-
Step 900
900
#37387B
oklch(37.8% 0.111 279)
-
Step 950
950 (this color)
#2B2D55
oklch(31.7% 0.071 279.4)
#2B2D55 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) | #1E3257 | 0.022 |
| Deuteranopia (no green cones) | #1B2F54 | 0.023 |
| Tritanopia (no blue cones) | #1D353C | 0.062 |
| Achromatopsia (no color) | #313131 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2D55
#2B2D55
oklch(31.7% 0.071 279.4)
- #3A3200
#3A3200
oklch(31.6% 0.066 99.5)
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 #2B2D55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.035
- Gunmetal #293241 ΔE 0.044
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.052
- Marine Blue #01386A ΔE 0.055
- Oxford Blue #1B263B ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
Use #2B2D55 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.