#2B345B
Closest named color: Prussian Blue (#1D3557). oklch(33.7% 0.07 272.4), rgb(43, 52, 91).
Aa
White text reads best on this color (12.03:1).
About this color
#2B345B is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.070 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.020 away. White text reads best on it, at 12.03:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.74:1 |
| White text | 12.03:1 |
Values
| HEX | #2B345B |
| RGB | rgb(43, 52, 91) |
| HSL | hsl(229, 36%, 26%) |
| OKLCH | oklch(33.7% 0.07 272.4) |
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 #2B345B | 12.03:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #2B345B | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #2B345B text on white | 12.03:1 | AAA | Lc 97.4 | Preferred for body text |
| #2B345B text on black | 1.74:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D2D8ED
oklch(88.4% 0.03 273.1)
-
Step 300
300
#B5BFE3
oklch(80.9% 0.052 273)
-
Step 400
400
#8E9ED5
oklch(70.7% 0.083 271.6)
-
Step 500
500
#7385CA
oklch(63.1% 0.106 271.9)
-
Step 600
600
#5C6DB7
oklch(55.5% 0.117 272.3)
-
Step 700
700
#4C5B9E
oklch(49.1% 0.109 272.3)
-
Step 800
800
#3E4B80
oklch(42.8% 0.089 271.8)
-
Step 900
900 (this color)
#2B345B
oklch(33.7% 0.07 272.4)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#2B345B 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) | #25385D | 0.014 |
| Deuteranopia (no green cones) | #20345A | 0.015 |
| Tritanopia (no blue cones) | #183C43 | 0.061 |
| Achromatopsia (no color) | #363636 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B345B
#2B345B
oklch(33.7% 0.07 272.4)
- #443600
#443600
oklch(33.8% 0.069 92.7)
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 #2B345B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.020
- Dark Blue Grey #1F3B4D ΔE 0.041
- Marine Blue #01386A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.046
- Gunmetal #293241 ΔE 0.046
- Marine #042E60 ΔE 0.048
- Midnight Green #073B4C ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.057
Use #2B345B 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.