#3F345D
Closest named color: Prussian Blue (#1D3557). oklch(35.6% 0.07 294.9), rgb(63, 52, 93).
Aa
White text reads best on this color (11.28:1).
About this color
#3F345D is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.070 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.053 away. White text reads best on it, at 11.28:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.070) |
| Temperature | in between |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #3F345D |
| RGB | rgb(63, 52, 93) |
| HSL | hsl(256, 28%, 28%) |
| OKLCH | oklch(35.6% 0.07 294.9) |
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 #3F345D | 11.28:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #3F345D | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #3F345D text on white | 11.28:1 | AAA | Lc 96.0 | Preferred for body text |
| #3F345D text on black | 1.86:1 | 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
#F6F5FA
oklch(97.2% 0.007 295.5)
-
Step 100
100
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#DAD6EB
oklch(88.6% 0.029 294.5)
-
Step 300
300
#C2BAE0
oklch(80.8% 0.054 294.8)
-
Step 400
400
#A496D0
oklch(70.6% 0.085 295.2)
-
Step 500
500
#8E7CC4
oklch(63.2% 0.108 294.6)
-
Step 600
600
#7964B0
oklch(55.7% 0.116 295.1)
-
Step 700
700
#665298
oklch(49.1% 0.11 295.2)
-
Step 800
800
#53447B
oklch(42.8% 0.09 294.9)
-
Step 900
900 (this color)
#3F345D
oklch(35.6% 0.07 294.9)
-
Step 950
950
#28223A
oklch(27.1% 0.044 294.7)
#3F345D 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) | #283B5F | 0.039 |
| Deuteranopia (no green cones) | #2A3A5C | 0.036 |
| Tritanopia (no blue cones) | #383B44 | 0.056 |
| Achromatopsia (no color) | #3B3B3B | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F345D
#3F345D
oklch(35.6% 0.07 294.9)
- #3B400E
#3B400E
oklch(35.6% 0.07 115)
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 #3F345D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.062
- Onyx #343A40 ΔE 0.063
- Gunmetal #293241 ΔE 0.064
- Charcoal #264653 ΔE 0.071
- Marine Blue #01386A ΔE 0.071
Use #3F345D 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.