#3D3768
Closest named color: Prussian Blue (#1D3557). oklch(36.8% 0.082 287.2), rgb(61, 55, 104).
Aa
White text reads best on this color (10.79:1).
About this color
#3D3768 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.082 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.058 away. White text reads best on it, at 10.79:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.94:1 |
| White text | 10.79:1 |
Values
| HEX | #3D3768 |
| RGB | rgb(61, 55, 104) |
| HSL | hsl(247, 31%, 31%) |
| OKLCH | oklch(36.8% 0.082 287.2) |
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 #3D3768 | 10.79:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #3D3768 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #3D3768 text on white | 10.79:1 | AAA | Lc 94.9 | Preferred for body text |
| #3D3768 text on black | 1.94:1 | Fails | Lc -7.7 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BDBBE7
oklch(80.8% 0.062 287)
-
Step 400
400
#9C97DB
oklch(70.7% 0.098 287)
-
Step 500
500
#857CD1
oklch(63.1% 0.126 287.1)
-
Step 600
600
#7064BF
oklch(55.7% 0.137 287.1)
-
Step 700
700
#5E52A4
oklch(49.1% 0.127 287.5)
-
Step 800
800
#4C4485
oklch(42.7% 0.105 286.7)
-
Step 900
900 (this color)
#3D3768
oklch(36.8% 0.082 287.2)
-
Step 950
950
#25223E
oklch(27% 0.051 287.4)
#3D3768 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) | #263F6A | 0.038 |
| Deuteranopia (no green cones) | #253C67 | 0.037 |
| Tritanopia (no blue cones) | #31414A | 0.071 |
| Achromatopsia (no color) | #3D3D3D | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3768
#3D3768
oklch(36.8% 0.082 287.2)
- #444200
#444200
oklch(36.9% 0.079 107.8)
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 #3D3768, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.063
- Twilight Blue #0A437A ΔE 0.063
- Marine Blue #01386A ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.069
- Charcoal #264653 ΔE 0.073
- Onyx #343A40 ΔE 0.076
Use #3D3768 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.