#43357D
Closest named color: Dark Slate Blue (#483D8B). oklch(38.4% 0.117 288.6), rgb(67, 53, 125).
Aa
White text reads best on this color (10.27:1).
About this color
#43357D is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.117 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.031 away. White text reads best on it, at 10.27:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #43357D |
| RGB | rgb(67, 53, 125) |
| HSL | hsl(252, 40%, 35%) |
| OKLCH | oklch(38.4% 0.117 288.6) |
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 #43357D | 10.27:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #43357D | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #43357D text on white | 10.27:1 | AAA | Lc 93.6 | Preferred for body text |
| #43357D text on black | 2.04:1 | Fails | Lc -8.9 | 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
#E9E8FA
oklch(93.7% 0.024 288.5)
-
Step 200
200
#D7D5F8
oklch(88.6% 0.048 288)
-
Step 300
300
#BEB8F7
oklch(81% 0.088 288.6)
-
Step 400
400
#9E90F2
oklch(70.6% 0.141 288.8)
-
Step 500
500
#8871EE
oklch(63% 0.181 288.6)
-
Step 600
600
#7456DC
oklch(55.7% 0.195 288.7)
-
Step 700
700
#6145BF
oklch(49.1% 0.182 288.4)
-
Step 800
800
#4F3A9A
oklch(42.7% 0.15 288.5)
-
Step 900
900 (this color)
#43357D
oklch(38.4% 0.117 288.6)
-
Step 950
950
#261F48
oklch(27.1% 0.074 288.3)
#43357D 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) | #0D427F | 0.066 |
| Deuteranopia (no green cones) | #0E3F7B | 0.065 |
| Tritanopia (no blue cones) | #314553 | 0.098 |
| Achromatopsia (no color) | #414141 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43357D
#43357D
oklch(38.4% 0.117 288.6)
- #484600
#484600
oklch(38.4% 0.083 107.9)
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 #43357D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.031
- Blueberry #464196 ΔE 0.050
- Cobalt #1E488F ΔE 0.067
- Twilight Blue #0A437A ΔE 0.070
- Rebecca Purple #663399 ΔE 0.079
- Twilight #4E518B ΔE 0.081
- Marine Blue #01386A ΔE 0.083
- Indigo #4B0082 ΔE 0.084
Use #43357D 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.