#55366C
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.094 309.2), rgb(85, 54, 108).
Aa
White text reads best on this color (9.85:1).
About this color
#55366C is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.094 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 9.85:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #55366C |
| RGB | rgb(85, 54, 108) |
| HSL | hsl(274, 33%, 32%) |
| OKLCH | oklch(39.4% 0.094 309.2) |
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 #55366C | 9.85:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #55366C | 2.13:1 | Fails | Lc 11.3 | Not readable |
| #55366C text on white | 9.85:1 | AAA | Lc 92.7 | Preferred for body text |
| #55366C text on black | 2.13:1 | Fails | Lc -9.8 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EEE6F5
oklch(93.6% 0.022 309.6)
-
Step 200
200
#E1D3ED
oklch(88.6% 0.038 309.6)
-
Step 300
300
#CEB5E4
oklch(81% 0.07 308.9)
-
Step 400
400
#B58CD6
oklch(70.6% 0.114 309.1)
-
Step 500
500
#A36ECB
oklch(63.1% 0.145 309.1)
-
Step 600
600
#8E54B8
oklch(55.6% 0.158 308.9)
-
Step 700
700
#79449E
oklch(49.1% 0.146 309.2)
-
Step 800
800
#623880
oklch(42.6% 0.121 309.1)
-
Step 900
900 (this color)
#55366C
oklch(39.4% 0.094 309.2)
-
Step 950
950
#2F1D3C
oklch(26.9% 0.06 309.7)
#55366C 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) | #29426E | 0.074 |
| Deuteranopia (no green cones) | #31446B | 0.068 |
| Tritanopia (no blue cones) | #523F4C | 0.067 |
| Achromatopsia (no color) | #434343 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55366C
#55366C
oklch(39.4% 0.094 309.2)
- #364F0F
#364F0F
oklch(39.3% 0.093 128.9)
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 #55366C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Blueberry #464196 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.080
- Twilight #4E518B ΔE 0.081
- Rebecca Purple #663399 ΔE 0.081
- Dusk #4E5481 ΔE 0.083
- Purple Brown #673A3F ΔE 0.088
- Dark Grey Blue #29465B ΔE 0.090
Use #55366C 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.