#55398D
Closest named color: Dark Slate Blue (#483D8B). oklch(42.1% 0.134 295.5), rgb(85, 57, 141).
Aa
White text reads best on this color (8.91:1).
About this color
#55398D is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.134 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.024 away. White text reads best on it, at 8.91:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #55398D |
| RGB | rgb(85, 57, 141) |
| HSL | hsl(260, 42%, 39%) |
| OKLCH | oklch(42.1% 0.134 295.5) |
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 #55398D | 8.91:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #55398D | 2.35:1 | Fails | Lc 13.9 | Not readable |
| #55398D text on white | 8.91:1 | AAA | Lc 90.1 | Preferred for body text |
| #55398D text on black | 2.35:1 | Fails | Lc -12.2 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F8
oklch(93.6% 0.023 296.7)
-
Step 200
200
#DBD4F3
oklch(88.5% 0.043 295.9)
-
Step 300
300
#C4B7EE
oklch(80.9% 0.078 295.4)
-
Step 400
400
#A790E6
oklch(70.8% 0.125 295.3)
-
Step 500
500
#9372DE
oklch(63.2% 0.159 295.6)
-
Step 600
600
#7E57CC
oklch(55.6% 0.174 295.6)
-
Step 700
700
#6A46B0
oklch(49% 0.162 295.5)
-
Step 800
800 (this color)
#55398D
oklch(42.1% 0.134 295.5)
-
Step 900
900
#473372
oklch(37.7% 0.105 295.6)
-
Step 950
950
#291F43
oklch(27.1% 0.065 294.4)
#55398D 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) | #084A90 | 0.091 |
| Deuteranopia (no green cones) | #16488B | 0.086 |
| Tritanopia (no blue cones) | #474B5D | 0.106 |
| Achromatopsia (no color) | #4A4A4A | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55398D
#55398D
oklch(42.1% 0.134 295.5)
- #4C5300
#4C5300
oklch(42.1% 0.096 115.2)
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 #55398D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.024
- Blueberry #464196 ΔE 0.033
- Rebecca Purple #663399 ΔE 0.038
- Twilight #4E518B ΔE 0.063
- Dusk #4E5481 ΔE 0.078
- Cobalt #1E488F ΔE 0.079
- Chrysanthemum #560BAD ΔE 0.083
- Dusk Blue #26538D ΔE 0.088
Use #55398D 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.