#402C6E
Closest named color: Dark Slate Blue (#483D8B). oklch(35.3% 0.11 294), rgb(64, 44, 110).
Aa
White text reads best on this color (11.64:1).
About this color
#402C6E is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.110 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 0.065 away. White text reads best on it, at 11.64:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #402C6E |
| RGB | rgb(64, 44, 110) |
| HSL | hsl(258, 43%, 30%) |
| OKLCH | oklch(35.3% 0.11 294) |
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 #402C6E | 11.64:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #402C6E | 1.80:1 | Fails | Lc 7.4 | Not readable |
| #402C6E text on white | 11.64:1 | AAA | Lc 96.5 | Preferred for body text |
| #402C6E text on black | 1.80:1 | 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
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F5
oklch(88.5% 0.045 293.8)
-
Step 300
300
#C3B7F1
oklch(80.9% 0.082 294)
-
Step 400
400
#A68FEA
oklch(70.7% 0.132 294.4)
-
Step 500
500
#9170E4
oklch(63% 0.169 294.1)
-
Step 600
600
#7C56D2
oklch(55.7% 0.183 293.7)
-
Step 700
700
#6945B6
oklch(49.1% 0.171 293.9)
-
Step 800
800
#553993
oklch(42.6% 0.142 293.9)
-
Step 900
900 (this color)
#402C6E
oklch(35.3% 0.11 294)
-
Step 950
950
#291E45
oklch(27% 0.071 294.2)
#402C6E 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) | #083970 | 0.072 |
| Deuteranopia (no green cones) | #0F376D | 0.068 |
| Tritanopia (no blue cones) | #343A48 | 0.088 |
| Achromatopsia (no color) | #383838 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402C6E
#402C6E
oklch(35.3% 0.11 294)
- #3B3F00
#3B3F00
oklch(35.2% 0.079 113.8)
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 #402C6E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.065
- Royal Purple #4B006E ΔE 0.072
- Indigo #4B0082 ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.073
- Marine Blue #01386A ΔE 0.077
- Twilight Blue #0A437A ΔE 0.082
- Marine #042E60 ΔE 0.083
- Blueberry #464196 ΔE 0.083
Use #402C6E 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.