#2A3154
Closest named color: Prussian Blue (#1D3557). oklch(32.5% 0.063 273.8), rgb(42, 49, 84).
Aa
White text reads best on this color (12.60:1).
About this color
#2A3154 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.063 and its hue 274°. 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 12.60:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.66:1 |
| White text | 12.60:1 |
Values
| HEX | #2A3154 |
| RGB | rgb(42, 49, 84) |
| HSL | hsl(230, 33%, 25%) |
| OKLCH | oklch(32.5% 0.063 273.8) |
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 #2A3154 | 12.60:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #2A3154 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #2A3154 text on white | 12.60:1 | AAA | Lc 98.5 | Preferred for body text |
| #2A3154 text on black | 1.66:1 | 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
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D3D8EB
oklch(88.4% 0.027 274.1)
-
Step 300
300
#B7BFE0
oklch(80.9% 0.047 274.6)
-
Step 400
400
#919ED0
oklch(70.7% 0.075 273.1)
-
Step 500
500
#7785C4
oklch(63.1% 0.096 273.8)
-
Step 600
600
#606EB0
oklch(55.6% 0.104 273.5)
-
Step 700
700
#505B98
oklch(49% 0.098 274.5)
-
Step 800
800
#414B7B
oklch(42.7% 0.081 273.6)
-
Step 900
900 (this color)
#2A3154
oklch(32.5% 0.063 273.8)
-
Step 950
950
#20253A
oklch(27% 0.04 273.2)
#2A3154 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) | #243555 | 0.014 |
| Deuteranopia (no green cones) | #203253 | 0.014 |
| Tritanopia (no blue cones) | #1B383E | 0.056 |
| Achromatopsia (no color) | #333333 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A3154
#2A3154
oklch(32.5% 0.063 273.8)
- #3F3304
#3F3304
oklch(32.5% 0.063 93.5)
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 #2A3154, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.032
- Gunmetal #293241 ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.039
- Marine #042E60 ΔE 0.047
- Midnight Green #073B4C ΔE 0.050
- Marine Blue #01386A ΔE 0.051
- Onyx #343A40 ΔE 0.055
Use #2A3154 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.