#402C6B
Closest named color: Dark Slate Blue (#483D8B). oklch(35.1% 0.106 295), rgb(64, 44, 107).
Aa
White text reads best on this color (11.72:1).
About this color
#402C6B is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.106 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.069 away. White text reads best on it, at 11.72:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.79:1 |
| White text | 11.72:1 |
Values
| HEX | #402C6B |
| RGB | rgb(64, 44, 107) |
| HSL | hsl(259, 42%, 30%) |
| OKLCH | oklch(35.1% 0.106 295) |
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 #402C6B | 11.72:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #402C6B | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #402C6B text on white | 11.72:1 | AAA | Lc 96.7 | Preferred for body text |
| #402C6B text on black | 1.79:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DBD4F4
oklch(88.5% 0.044 295.5)
-
Step 300
300
#C4B7EF
oklch(80.9% 0.079 295.2)
-
Step 400
400
#A790E7
oklch(70.8% 0.126 295.1)
-
Step 500
500
#9271E0
oklch(63.1% 0.163 295)
-
Step 600
600
#7D57CD
oklch(55.6% 0.175 294.9)
-
Step 700
700
#6A46B2
oklch(49.1% 0.164 295)
-
Step 800
800
#563A90
oklch(42.6% 0.136 295)
-
Step 900
900 (this color)
#402C6B
oklch(35.1% 0.106 295)
-
Step 950
950
#291E43
oklch(26.9% 0.067 295.2)
#402C6B 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) | #0D396D | 0.070 |
| Deuteranopia (no green cones) | #14376A | 0.065 |
| Tritanopia (no blue cones) | #353947 | 0.083 |
| Achromatopsia (no color) | #383838 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402C6B
#402C6B
oklch(35.1% 0.106 295)
- #3A3F00
#3A3F00
oklch(35.1% 0.079 114.7)
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 #402C6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.069
- Prussian Blue #1D3557 ΔE 0.071
- Royal Purple #4B006E ΔE 0.073
- Indigo #4B0082 ΔE 0.076
- Marine Blue #01386A ΔE 0.076
- Marine #042E60 ΔE 0.082
- Twilight Blue #0A437A ΔE 0.083
- Grape Purple #5D1451 ΔE 0.083
Use #402C6B 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.