#402E6B
Closest named color: Dark Slate Blue (#483D8B). oklch(35.5% 0.102 294.2), rgb(64, 46, 107).
Aa
White text reads best on this color (11.53:1).
About this color
#402E6B is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.102 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.066 away. White text reads best on it, at 11.53:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.82:1 |
| White text | 11.53:1 |
Values
| HEX | #402E6B |
| RGB | rgb(64, 46, 107) |
| HSL | hsl(258, 40%, 30%) |
| OKLCH | oklch(35.5% 0.102 294.2) |
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 #402E6B | 11.53:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #402E6B | 1.82:1 | Fails | Lc 7.6 | Not readable |
| #402E6B text on white | 11.53:1 | AAA | Lc 96.3 | Preferred for body text |
| #402E6B 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EAE7F8
oklch(93.5% 0.023 294.1)
-
Step 200
200
#DAD4F3
oklch(88.4% 0.043 294.4)
-
Step 300
300
#C3B8EE
oklch(81% 0.076 294)
-
Step 400
400
#A591E5
oklch(70.7% 0.122 294)
-
Step 500
500
#9073DE
oklch(63.1% 0.157 293.9)
-
Step 600
600
#7C59CB
oklch(55.7% 0.17 294.4)
-
Step 700
700
#6848B0
oklch(49.1% 0.159 293.9)
-
Step 800
800
#553C8E
oklch(42.7% 0.13 294.3)
-
Step 900
900 (this color)
#402E6B
oklch(35.5% 0.102 294.2)
-
Step 950
950
#291F43
oklch(27.1% 0.065 294.4)
#402E6B 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) | #133A6D | 0.065 |
| Deuteranopia (no green cones) | #17386A | 0.061 |
| Tritanopia (no blue cones) | #353B47 | 0.084 |
| Achromatopsia (no color) | #393939 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402E6B
#402E6B
oklch(35.5% 0.102 294.2)
- #3B4000
#3B4000
oklch(35.5% 0.08 114.7)
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 #402E6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.066
- Prussian Blue #1D3557 ΔE 0.069
- Marine Blue #01386A ΔE 0.074
- Royal Purple #4B006E ΔE 0.077
- Twilight Blue #0A437A ΔE 0.079
- Indigo #4B0082 ΔE 0.081
- Marine #042E60 ΔE 0.081
- Space Cadet #2B2D42 ΔE 0.083
Use #402E6B 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.