#434381
Closest named color: Dark Slate Blue (#483D8B). oklch(41.5% 0.101 281), rgb(67, 67, 129).
Aa
White text reads best on this color (8.90:1).
About this color
#434381 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.101 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.025 away. White text reads best on it, at 8.90:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #434381 |
| RGB | rgb(67, 67, 129) |
| HSL | hsl(240, 32%, 38%) |
| OKLCH | oklch(41.5% 0.101 281) |
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 #434381 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #434381 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #434381 text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #434381 text on black | 2.35:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#B9BDE7
oklch(80.9% 0.059 280.7)
-
Step 400
400
#969ADB
oklch(70.8% 0.095 281)
-
Step 500
500
#7D7FD1
oklch(63% 0.122 281.2)
-
Step 600
600
#6767BE
oklch(55.5% 0.133 281.2)
-
Step 700
700
#5656A4
oklch(49.2% 0.122 280.9)
-
Step 800
800 (this color)
#434381
oklch(41.5% 0.101 281)
-
Step 900
900
#3B3C6A
oklch(37.8% 0.078 281.1)
-
Step 950
950
#22233E
oklch(26.9% 0.05 280.9)
#434381 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) | #294C83 | 0.039 |
| Deuteranopia (no green cones) | #254780 | 0.039 |
| Tritanopia (no blue cones) | #2E505B | 0.089 |
| Achromatopsia (no color) | #4A4A4A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434381
#434381
oklch(41.5% 0.101 281)
- #564C00
#564C00
oklch(41.4% 0.086 100.7)
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 #434381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.025
- Blueberry #464196 ΔE 0.036
- Twilight #4E518B ΔE 0.046
- Cobalt #1E488F ΔE 0.048
- Dusk Blue #26538D ΔE 0.053
- Dusk #4E5481 ΔE 0.054
- Light Navy #155084 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.062
Use #434381 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.