#3D3C70
Closest named color: Dark Slate Blue (#483D8B). oklch(38.4% 0.087 282.4), rgb(61, 60, 112).
Aa
White text reads best on this color (10.10:1).
About this color
#3D3C70 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.087 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.049 away. White text reads best on it, at 10.10:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.07:1 |
| White text | 10.10:1 |
Values
| HEX | #3D3C70 |
| RGB | rgb(61, 60, 112) |
| HSL | hsl(241, 30%, 34%) |
| OKLCH | oklch(38.4% 0.087 282.4) |
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 #3D3C70 | 10.10:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #3D3C70 | 2.07:1 | Fails | Lc 10.6 | Not readable |
| #3D3C70 text on white | 10.10:1 | AAA | Lc 93.3 | Preferred for body text |
| #3D3C70 text on black | 2.07:1 | Fails | Lc -9.2 | 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
#E7E9F7
oklch(93.7% 0.019 279.5)
-
Step 200
200
#D5D7F1
oklch(88.6% 0.036 282.1)
-
Step 300
300
#B9BCEA
oklch(80.8% 0.065 281.9)
-
Step 400
400
#9798E0
oklch(70.7% 0.105 282.8)
-
Step 500
500
#7E7DD7
oklch(63% 0.133 282.4)
-
Step 600
600
#6865C5
oklch(55.7% 0.145 282)
-
Step 700
700
#5753AA
oklch(49.1% 0.135 282.3)
-
Step 800
800
#47448A
oklch(42.6% 0.113 282.4)
-
Step 900
900 (this color)
#3D3C70
oklch(38.4% 0.087 282.4)
-
Step 950
950
#232240
oklch(26.9% 0.055 283.6)
#3D3C70 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) | #284372 | 0.033 |
| Deuteranopia (no green cones) | #26406F | 0.033 |
| Tritanopia (no blue cones) | #2D4750 | 0.076 |
| Achromatopsia (no color) | #424242 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3C70
#3D3C70
oklch(38.4% 0.087 282.4)
- #4C4400
#4C4400
oklch(38.3% 0.08 101.8)
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 #3D3C70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.049
- Twilight Blue #0A437A ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.059
- Cobalt #1E488F ΔE 0.064
- Blueberry #464196 ΔE 0.066
- Marine Blue #01386A ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.068
- Light Navy #155084 ΔE 0.068
Use #3D3C70 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.