#55366E
Closest named color: Dark Slate Blue (#483D8B). oklch(39.5% 0.097 308.1), rgb(85, 54, 110).
Aa
White text reads best on this color (9.81:1).
About this color
#55366E is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.097 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.054 away. White text reads best on it, at 9.81:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #55366E |
| RGB | rgb(85, 54, 110) |
| HSL | hsl(273, 34%, 32%) |
| OKLCH | oklch(39.5% 0.097 308.1) |
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 #55366E | 9.81:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #55366E | 2.13:1 | Fails | Lc 11.4 | Not readable |
| #55366E text on white | 9.81:1 | AAA | Lc 92.6 | Preferred for body text |
| #55366E text on black | 2.13:1 | Fails | Lc -9.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F5
oklch(93.6% 0.022 309.6)
-
Step 200
200
#E0D2EE
oklch(88.4% 0.041 307.9)
-
Step 300
300
#CEB4E5
oklch(80.8% 0.073 308.8)
-
Step 400
400
#B58CD8
oklch(70.7% 0.116 308.4)
-
Step 500
500
#A36ECE
oklch(63.2% 0.149 308.2)
-
Step 600
600
#8E53BB
oklch(55.6% 0.163 308.2)
-
Step 700
700
#7943A1
oklch(49.1% 0.151 308.3)
-
Step 800
800
#623882
oklch(42.7% 0.124 308.2)
-
Step 900
900 (this color)
#55366E
oklch(39.5% 0.097 308.1)
-
Step 950
950
#2F1D3D
oklch(27% 0.062 308.8)
#55366E 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) | #274270 | 0.076 |
| Deuteranopia (no green cones) | #30446D | 0.068 |
| Tritanopia (no blue cones) | #523F4D | 0.069 |
| Achromatopsia (no color) | #434343 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55366E
#55366E
oklch(39.5% 0.097 308.1)
- #375009
#375009
oklch(39.6% 0.098 128.1)
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 #55366E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.054
- Blueberry #464196 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.078
- Twilight #4E518B ΔE 0.080
- Grape Purple #5D1451 ΔE 0.081
- Dusk #4E5481 ΔE 0.083
- Dark Grey Blue #29465B ΔE 0.091
- Purple Brown #673A3F ΔE 0.091
Use #55366E 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.