#2A335F
Closest named color: Prussian Blue (#1D3557). oklch(33.7% 0.078 272.8), rgb(42, 51, 95).
Aa
White text reads best on this color (12.08:1).
About this color
#2A335F is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.078 and its hue 273°. 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 12.08:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.73:1 |
| White text | 12.08:1 |
Values
| HEX | #2A335F |
| RGB | rgb(42, 51, 95) |
| HSL | hsl(230, 39%, 27%) |
| OKLCH | oklch(33.7% 0.078 272.8) |
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 #2A335F | 12.08:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #2A335F | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #2A335F text on white | 12.08:1 | AAA | Lc 97.5 | Preferred for body text |
| #2A335F text on black | 1.73:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8EF
oklch(88.5% 0.032 274.1)
-
Step 300
300
#B4BFE7
oklch(81% 0.058 273)
-
Step 400
400
#8D9DDB
oklch(70.7% 0.093 272.7)
-
Step 500
500
#7283D2
oklch(63.1% 0.121 273.3)
-
Step 600
600
#5B6CBF
oklch(55.7% 0.13 272.8)
-
Step 700
700
#4B59A5
oklch(49.1% 0.122 273.2)
-
Step 800
800
#3D4985
oklch(42.6% 0.1 272.9)
-
Step 900
900 (this color)
#2A335F
oklch(33.7% 0.078 272.8)
-
Step 950
950
#1E243F
oklch(26.9% 0.051 273)
#2A335F 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) | #213861 | 0.018 |
| Deuteranopia (no green cones) | #1B345E | 0.019 |
| Tritanopia (no blue cones) | #123C44 | 0.069 |
| Achromatopsia (no color) | #363636 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A335F
#2A335F
oklch(33.7% 0.078 272.8)
- #433600
#433600
oklch(33.7% 0.069 93.9)
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 #2A335F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Marine Blue #01386A ΔE 0.040
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.052
- Gunmetal #293241 ΔE 0.054
- Midnight Green #073B4C ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.062
Use #2A335F 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.