#402D6F
Closest named color: Dark Slate Blue (#483D8B). oklch(35.6% 0.11 293.3), rgb(64, 45, 111).
Aa
White text reads best on this color (11.52:1).
About this color
#402D6F is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.110 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 11.52:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.82:1 |
| White text | 11.52:1 |
Values
| HEX | #402D6F |
| RGB | rgb(64, 45, 111) |
| HSL | hsl(257, 42%, 31%) |
| OKLCH | oklch(35.6% 0.11 293.3) |
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 #402D6F | 11.52:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #402D6F | 1.82:1 | Fails | Lc 7.6 | Not readable |
| #402D6F text on white | 11.52:1 | AAA | Lc 96.3 | Preferred for body text |
| #402D6F text on black | 1.82:1 | 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
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F5
oklch(88.5% 0.045 293.8)
-
Step 300
300
#C2B7F1
oklch(80.8% 0.082 293.2)
-
Step 400
400
#A590EB
oklch(70.8% 0.131 293.4)
-
Step 500
500
#9071E4
oklch(63.1% 0.168 293.4)
-
Step 600
600
#7B56D2
oklch(55.6% 0.183 293.3)
-
Step 700
700
#6845B6
oklch(49% 0.171 293.4)
-
Step 800
800
#553A93
oklch(42.7% 0.14 293.6)
-
Step 900
900 (this color)
#402D6F
oklch(35.6% 0.11 293.3)
-
Step 950
950
#281E45
oklch(26.9% 0.071 292.9)
#402D6F 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) | #093A71 | 0.071 |
| Deuteranopia (no green cones) | #10386E | 0.067 |
| Tritanopia (no blue cones) | #343B49 | 0.088 |
| Achromatopsia (no color) | #393939 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402D6F
#402D6F
oklch(35.6% 0.11 293.3)
- #3C4000
#3C4000
oklch(35.6% 0.08 113.7)
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 #402D6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.073
- Royal Purple #4B006E ΔE 0.074
- Indigo #4B0082 ΔE 0.075
- Marine Blue #01386A ΔE 0.076
- Twilight Blue #0A437A ΔE 0.080
- Blueberry #464196 ΔE 0.081
- Marine #042E60 ΔE 0.083
Use #402D6F 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.