#3D3071
Closest named color: Dark Slate Blue (#483D8B). oklch(36% 0.108 289), rgb(61, 48, 113).
Aa
White text reads best on this color (11.29:1).
About this color
#3D3071 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.108 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 11.29:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.85:1 |
| White text | 11.29:1 |
Values
| HEX | #3D3071 |
| RGB | rgb(61, 48, 113) |
| HSL | hsl(252, 40%, 32%) |
| OKLCH | oklch(36% 0.108 289) |
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 #3D3071 | 11.29:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3D3071 | 1.85:1 | Fails | Lc 8.1 | Not readable |
| #3D3071 text on white | 11.29:1 | AAA | Lc 95.8 | Preferred for body text |
| #3D3071 text on black | 1.85:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D7D5F6
oklch(88.5% 0.045 288.2)
-
Step 300
300
#BEB9F2
oklch(80.9% 0.08 288.5)
-
Step 400
400
#9E92EC
oklch(70.7% 0.13 288.7)
-
Step 500
500
#8974E6
oklch(63.1% 0.166 289.2)
-
Step 600
600
#745AD4
oklch(55.7% 0.18 289)
-
Step 700
700
#6149B7
oklch(49.1% 0.166 288.8)
-
Step 800
800
#4F3C94
oklch(42.6% 0.139 289.1)
-
Step 900
900 (this color)
#3D3071
oklch(36% 0.108 289)
-
Step 950
950
#261F45
oklch(26.9% 0.069 289.4)
#3D3071 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) | #0E3C73 | 0.061 |
| Deuteranopia (no green cones) | #0F3970 | 0.060 |
| Tritanopia (no blue cones) | #2E3E4B | 0.089 |
| Achromatopsia (no color) | #3A3A3A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3071
#3D3071
oklch(36% 0.108 289)
- #414000
#414000
oklch(36.1% 0.078 108.8)
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 #3D3071, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Marine Blue #01386A ΔE 0.069
- Prussian Blue #1D3557 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.070
- Blueberry #464196 ΔE 0.075
- Marine #042E60 ΔE 0.079
- Indigo #4B0082 ΔE 0.081
- Cobalt #1E488F ΔE 0.082
Use #3D3071 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.