#40346F
Closest named color: Dark Slate Blue (#483D8B). oklch(36.9% 0.098 290.1), rgb(64, 52, 111).
Aa
White text reads best on this color (10.83:1).
About this color
#40346F is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.098 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 10.83:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.93:1 |
| White text | 10.83:1 |
Values
| HEX | #40346F |
| RGB | rgb(64, 52, 111) |
| HSL | hsl(252, 36%, 32%) |
| OKLCH | oklch(36.9% 0.098 290.1) |
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 #40346F | 10.83:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #40346F | 1.93:1 | Fails | Lc 9.0 | Not readable |
| #40346F text on white | 10.83:1 | AAA | Lc 94.9 | Preferred for body text |
| #40346F text on black | 1.93:1 | Fails | Lc -7.7 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F3
oklch(88.5% 0.041 290.1)
-
Step 300
300
#BFB9EE
oklch(80.9% 0.074 289.8)
-
Step 400
400
#A093E5
oklch(70.7% 0.118 290.3)
-
Step 500
500
#8A76DD
oklch(63% 0.151 290.3)
-
Step 600
600
#755DCB
oklch(55.7% 0.164 290.1)
-
Step 700
700
#624CAF
oklch(49.1% 0.151 289.9)
-
Step 800
800
#503F8E
oklch(42.8% 0.126 289.9)
-
Step 900
900 (this color)
#40346F
oklch(36.9% 0.098 290.1)
-
Step 950
950
#262042
oklch(26.9% 0.062 289.7)
#40346F 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) | #1C3E71 | 0.053 |
| Deuteranopia (no green cones) | #1D3C6E | 0.052 |
| Tritanopia (no blue cones) | #33404C | 0.081 |
| Achromatopsia (no color) | #3D3D3D | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40346F
#40346F
oklch(36.9% 0.098 290.1)
- #424300
#424300
oklch(37% 0.081 110.7)
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 #40346F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Twilight Blue #0A437A ΔE 0.068
- Prussian Blue #1D3557 ΔE 0.069
- Marine Blue #01386A ΔE 0.071
- Blueberry #464196 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.076
- Cobalt #1E488F ΔE 0.078
- Dark Blue Grey #1F3B4D ΔE 0.084
Use #40346F 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.