#403A86
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.123 282.8), rgb(64, 58, 134).
Aa
White text reads best on this color (9.68:1).
About this color
#403A86 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.123 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.018 away. White text reads best on it, at 9.68:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.16:1 |
| White text | 9.68:1 |
Values
| HEX | #403A86 |
| RGB | rgb(64, 58, 134) |
| HSL | hsl(245, 40%, 38%) |
| OKLCH | oklch(39.8% 0.123 282.8) |
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 #403A86 | 9.68:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #403A86 | 2.16:1 | Fails | Lc 11.8 | Not readable |
| #403A86 text on white | 9.68:1 | AAA | Lc 92.2 | Preferred for body text |
| #403A86 text on black | 2.16:1 | Fails | Lc -10.2 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E7E8FC
oklch(93.6% 0.027 283.6)
-
Step 200
200
#D4D6FB
oklch(88.6% 0.051 282.9)
-
Step 300
300
#B8B9FB
oklch(80.9% 0.093 283.4)
-
Step 400
400
#9492F9
oklch(70.6% 0.148 282.8)
-
Step 500
500
#7D74F6
oklch(63.2% 0.188 282.7)
-
Step 600
600
#6858E5
oklch(55.6% 0.205 282.6)
-
Step 700
700
#5746C7
oklch(49% 0.192 282.7)
-
Step 800
800
#473BA1
oklch(42.7% 0.158 282.7)
-
Step 900
900 (this color)
#403A86
oklch(39.8% 0.123 282.8)
-
Step 950
950
#221F4B
oklch(27% 0.079 282.8)
#403A86 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) | #0B4789 | 0.059 |
| Deuteranopia (no green cones) | #034284 | 0.061 |
| Tritanopia (no blue cones) | #254B5A | 0.105 |
| Achromatopsia (no color) | #444444 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403A86
#403A86
oklch(39.8% 0.123 282.8)
- #504800
#504800
oklch(39.7% 0.083 102.2)
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 #403A86, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.018
- Blueberry #464196 ΔE 0.033
- Cobalt #1E488F ΔE 0.052
- Twilight Blue #0A437A ΔE 0.064
- Twilight #4E518B ΔE 0.069
- Dusk Blue #26538D ΔE 0.071
- Light Navy #155084 ΔE 0.072
- Sapphire #2138AB ΔE 0.073
Use #403A86 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.