#402E72
Closest named color: Dark Slate Blue (#483D8B). oklch(36% 0.112 292), rgb(64, 46, 114).
Aa
White text reads best on this color (11.34:1).
About this color
#402E72 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.112 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 11.34:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.85:1 |
| White text | 11.34:1 |
Values
| HEX | #402E72 |
| RGB | rgb(64, 46, 114) |
| HSL | hsl(256, 43%, 31%) |
| OKLCH | oklch(36% 0.112 292) |
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 #402E72 | 11.34:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #402E72 | 1.85:1 | Fails | Lc 8.0 | Not readable |
| #402E72 text on white | 11.34:1 | AAA | Lc 95.9 | Preferred for body text |
| #402E72 text on black | 1.85:1 | 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
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C1B7F3
oklch(80.8% 0.084 292)
-
Step 400
400
#A390ED
oklch(70.8% 0.134 292)
-
Step 500
500
#8E71E7
oklch(63.1% 0.172 292.1)
-
Step 600
600
#7956D5
oklch(55.6% 0.186 291.9)
-
Step 700
700
#6645B9
oklch(49.1% 0.174 291.8)
-
Step 800
800
#533A96
oklch(42.8% 0.144 291.7)
-
Step 900
900 (this color)
#402E72
oklch(36% 0.112 292)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#402E72 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) | #073B74 | 0.071 |
| Deuteranopia (no green cones) | #0D3971 | 0.067 |
| Tritanopia (no blue cones) | #323D4B | 0.091 |
| Achromatopsia (no color) | #3A3A3A | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #402E72
#402E72
oklch(36% 0.112 292)
- #3E4100
#3E4100
oklch(36% 0.08 112.7)
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 #402E72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Indigo #4B0082 ΔE 0.074
- Blueberry #464196 ΔE 0.075
- Prussian Blue #1D3557 ΔE 0.076
- Marine Blue #01386A ΔE 0.076
- Royal Purple #4B006E ΔE 0.076
- Twilight Blue #0A437A ΔE 0.077
- Marine #042E60 ΔE 0.085
Use #402E72 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.