#43407D
Closest named color: Dark Slate Blue (#483D8B). oklch(40.6% 0.1 283.2), rgb(67, 64, 125).
Aa
White text reads best on this color (9.25:1).
About this color
#43407D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.100 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.027 away. White text reads best on it, at 9.25:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.25:1 |
Values
| HEX | #43407D |
| RGB | rgb(67, 64, 125) |
| HSL | hsl(243, 32%, 37%) |
| OKLCH | oklch(40.6% 0.1 283.2) |
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 #43407D | 9.25:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #43407D | 2.26:1 | Fails | Lc 12.7 | Not readable |
| #43407D text on white | 9.25:1 | AAA | Lc 91.2 | Preferred for body text |
| #43407D text on black | 2.26:1 | Fails | Lc -11.1 | 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
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7EF
oklch(88.6% 0.033 283.8)
-
Step 300
300
#BBBCE6
oklch(80.8% 0.059 283.9)
-
Step 400
400
#9899D9
oklch(70.6% 0.093 283.1)
-
Step 500
500
#807FCF
oklch(63.1% 0.119 283)
-
Step 600
600
#6A67BC
oklch(55.6% 0.129 282.9)
-
Step 700
700
#5955A2
oklch(49.1% 0.12 283.4)
-
Step 800
800 (this color)
#43407D
oklch(40.6% 0.1 283.2)
-
Step 900
900
#3C3B69
oklch(37.6% 0.078 283)
-
Step 950
950
#23233E
oklch(27% 0.05 282.6)
#43407D 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) | #27497F | 0.041 |
| Deuteranopia (no green cones) | #24457C | 0.042 |
| Tritanopia (no blue cones) | #304D58 | 0.087 |
| Achromatopsia (no color) | #474747 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43407D
#43407D
oklch(40.6% 0.1 283.2)
- #524B00
#524B00
oklch(40.7% 0.086 103.4)
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 #43407D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.027
- Blueberry #464196 ΔE 0.042
- Cobalt #1E488F ΔE 0.053
- Twilight #4E518B ΔE 0.054
- Twilight Blue #0A437A ΔE 0.061
- Dusk Blue #26538D ΔE 0.061
- Light Navy #155084 ΔE 0.061
- Dusk #4E5481 ΔE 0.061
Use #43407D 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.