#402C71
Closest named color: Dark Slate Blue (#483D8B). oklch(35.6% 0.114 293.1), rgb(64, 44, 113).
Aa
White text reads best on this color (11.55:1).
About this color
#402C71 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.114 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 0.061 away. White text reads best on it, at 11.55:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.114) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #402C71 |
| RGB | rgb(64, 44, 113) |
| HSL | hsl(257, 44%, 31%) |
| OKLCH | oklch(35.6% 0.114 293.1) |
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 #402C71 | 11.55:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #402C71 | 1.81:1 | Fails | Lc 7.6 | Not readable |
| #402C71 text on white | 11.55:1 | AAA | Lc 96.3 | Preferred for body text |
| #402C71 text on black | 1.81:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C2B7F3
oklch(80.9% 0.084 292.8)
-
Step 400
400
#A48FEE
oklch(70.7% 0.137 292.7)
-
Step 500
500
#9070E8
oklch(63.2% 0.175 293)
-
Step 600
600
#7B54D6
oklch(55.6% 0.19 293)
-
Step 700
700
#6844B9
oklch(49.1% 0.176 293)
-
Step 800
800
#553896
oklch(42.6% 0.147 293.4)
-
Step 900
900 (this color)
#402C71
oklch(35.6% 0.114 293.1)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#402C71 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) | #023A73 | 0.075 |
| Deuteranopia (no green cones) | #09386F | 0.072 |
| Tritanopia (no blue cones) | #333B4A | 0.091 |
| Achromatopsia (no color) | #393939 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402C71
#402C71
oklch(35.6% 0.114 293.1)
- #3D4000
#3D4000
oklch(35.7% 0.079 112.7)
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 #402C71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.061
- Indigo #4B0082 ΔE 0.071
- Royal Purple #4B006E ΔE 0.072
- Prussian Blue #1D3557 ΔE 0.076
- Marine Blue #01386A ΔE 0.078
- Blueberry #464196 ΔE 0.080
- Twilight Blue #0A437A ΔE 0.081
- Marine #042E60 ΔE 0.084
Use #402C71 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.