#3D366E
Closest named color: Dark Slate Blue (#483D8B). oklch(37% 0.094 286.6), rgb(61, 54, 110).
Aa
White text reads best on this color (10.76:1).
About this color
#3D366E is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.094 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 10.76:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #3D366E |
| RGB | rgb(61, 54, 110) |
| HSL | hsl(248, 34%, 32%) |
| OKLCH | oklch(37% 0.094 286.6) |
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 #3D366E | 10.76:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #3D366E | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #3D366E text on white | 10.76:1 | AAA | Lc 94.8 | Preferred for body text |
| #3D366E text on black | 1.95:1 | Fails | Lc -7.8 | 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
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D7D6F2
oklch(88.6% 0.038 287.2)
-
Step 300
300
#BDBAEC
oklch(80.8% 0.07 287.5)
-
Step 400
400
#9B96E3
oklch(70.8% 0.111 286.2)
-
Step 500
500
#847ADB
oklch(63.2% 0.143 286.3)
-
Step 600
600
#6F60C9
oklch(55.6% 0.157 286.7)
-
Step 700
700
#5D4FAD
oklch(49.1% 0.144 286.6)
-
Step 800
800
#4C418C
oklch(42.6% 0.12 286.9)
-
Step 900
900 (this color)
#3D366E
oklch(37% 0.094 286.6)
-
Step 950
950
#252142
oklch(27% 0.06 287.2)
#3D366E 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) | #1F3F70 | 0.045 |
| Deuteranopia (no green cones) | #1F3C6D | 0.043 |
| Tritanopia (no blue cones) | #2F424C | 0.080 |
| Achromatopsia (no color) | #3E3E3E | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D366E
#3D366E
oklch(37% 0.094 286.6)
- #454200
#454200
oklch(37% 0.079 106.8)
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 #3D366E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Twilight Blue #0A437A ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.064
- Marine Blue #01386A ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.069
- Blueberry #464196 ΔE 0.072
- Cobalt #1E488F ΔE 0.074
- Dark Blue Grey #1F3B4D ΔE 0.078
Use #3D366E 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.