#403186
Closest named color: Dark Slate Blue (#483D8B). oklch(38.1% 0.136 286.1), rgb(64, 49, 134).
Aa
White text reads best on this color (10.49:1).
About this color
#403186 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.136 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 10.49:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.49:1 |
Values
| HEX | #403186 |
| RGB | rgb(64, 49, 134) |
| HSL | hsl(251, 46%, 36%) |
| OKLCH | oklch(38.1% 0.136 286.1) |
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 #403186 | 10.49:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #403186 | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #403186 text on white | 10.49:1 | AAA | Lc 94.0 | Preferred for body text |
| #403186 text on black | 2.00:1 | Fails | Lc -8.6 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D5D4FE
oklch(88.4% 0.058 286.3)
-
Step 300
300
#BBB7FF
oklch(80.9% 0.101 286.5)
-
Step 400
400
#9A8EFF
oklch(70.6% 0.161 286.3)
-
Step 500
500
#846DFF
oklch(63.2% 0.208 286)
-
Step 600
600
#704EEE
oklch(55.5% 0.227 286.2)
-
Step 700
700
#5E3DCF
oklch(49% 0.211 286)
-
Step 800
800
#4D34A7
oklch(42.6% 0.174 286.4)
-
Step 900
900 (this color)
#403186
oklch(38.1% 0.136 286.1)
-
Step 950
950
#241D4E
oklch(27% 0.087 285.5)
#403186 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) | #004289 | 0.070 |
| Deuteranopia (no green cones) | #003D84 | 0.068 |
| Tritanopia (no blue cones) | #264556 | 0.114 |
| Achromatopsia (no color) | #3F3F3F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403186
#403186
oklch(38.1% 0.136 286.1)
- #494500
#494500
oklch(38.2% 0.081 105.9)
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 #403186, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.048
- Cobalt #1E488F ΔE 0.068
- Indigo #4B0082 ΔE 0.074
- Imperial Purple #480CA8 ΔE 0.074
- Sapphire #2138AB ΔE 0.074
- Twilight Blue #0A437A ΔE 0.075
- Rebecca Purple #663399 ΔE 0.078
Use #403186 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.