#43337D
Closest named color: Dark Slate Blue (#483D8B). oklch(38.1% 0.12 289.4), rgb(67, 51, 125).
Aa
White text reads best on this color (10.45:1).
About this color
#43337D is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.120 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 10.45:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #43337D |
| RGB | rgb(67, 51, 125) |
| HSL | hsl(253, 42%, 35%) |
| OKLCH | oklch(38.1% 0.12 289.4) |
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 #43337D | 10.45:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #43337D | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #43337D text on white | 10.45:1 | AAA | Lc 94.0 | Preferred for body text |
| #43337D text on black | 2.00:1 | Fails | Lc -8.6 | 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
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4F9
oklch(88.5% 0.051 290.3)
-
Step 300
300
#BFB7F8
oklch(80.9% 0.091 289.8)
-
Step 400
400
#9F8FF4
oklch(70.6% 0.145 289.4)
-
Step 500
500
#8A70F0
oklch(63.2% 0.185 289.4)
-
Step 600
600
#7554DE
oklch(55.6% 0.2 289.2)
-
Step 700
700
#6343C1
oklch(49.1% 0.187 289.4)
-
Step 800
800
#50389C
oklch(42.6% 0.155 289.2)
-
Step 900
900 (this color)
#43337D
oklch(38.1% 0.12 289.4)
-
Step 950
950
#261E49
oklch(27% 0.077 288.7)
#43337D 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) | #05417F | 0.071 |
| Deuteranopia (no green cones) | #083E7B | 0.070 |
| Tritanopia (no blue cones) | #314353 | 0.098 |
| Achromatopsia (no color) | #3F3F3F | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43337D
#43337D
oklch(38.1% 0.12 289.4)
- #464600
#464600
oklch(38.2% 0.083 109.8)
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 #43337D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.053
- Cobalt #1E488F ΔE 0.071
- Twilight Blue #0A437A ΔE 0.073
- Indigo #4B0082 ΔE 0.079
- Rebecca Purple #663399 ΔE 0.079
- Marine Blue #01386A ΔE 0.083
- Twilight #4E518B ΔE 0.085
Use #43337D 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.