#2F305F
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.081 280.1), rgb(47, 48, 95).
Aa
White text reads best on this color (12.28:1).
About this color
#2F305F is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.081 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.033 away. White text reads best on it, at 12.28:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.28:1 |
Values
| HEX | #2F305F |
| RGB | rgb(47, 48, 95) |
| HSL | hsl(239, 34%, 28%) |
| OKLCH | oklch(33.4% 0.081 280.1) |
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 #2F305F | 12.28:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #2F305F | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #2F305F text on white | 12.28:1 | AAA | Lc 97.9 | Preferred for body text |
| #2F305F 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D4D7F0
oklch(88.5% 0.034 280.2)
-
Step 300
300
#B8BDE8
oklch(80.9% 0.061 279.7)
-
Step 400
400
#959ADD
oklch(70.8% 0.098 280.3)
-
Step 500
500
#7B7FD3
oklch(63% 0.125 280.1)
-
Step 600
600
#6567C0
oklch(55.5% 0.136 280)
-
Step 700
700
#5455A6
oklch(49% 0.127 280.1)
-
Step 800
800
#454686
oklch(42.6% 0.104 280.3)
-
Step 900
900 (this color)
#2F305F
oklch(33.4% 0.081 280.1)
-
Step 950
950
#22233F
oklch(27% 0.052 280.8)
#2F305F 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) | #1D3761 | 0.029 |
| Deuteranopia (no green cones) | #19335E | 0.030 |
| Tritanopia (no blue cones) | #1E3A43 | 0.070 |
| Achromatopsia (no color) | #353535 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F305F
#2F305F
oklch(33.4% 0.081 280.1)
- #3F3700
#3F3700
oklch(33.5% 0.07 100.3)
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 #2F305F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.033
- Marine Blue #01386A ΔE 0.048
- Marine #042E60 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.056
- Gunmetal #293241 ΔE 0.057
- Midnight Green #073B4C ΔE 0.067
- Twilight Blue #0A437A ΔE 0.070
Use #2F305F 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.