#55336C
Closest named color: Dark Slate Blue (#483D8B). oklch(38.9% 0.1 310.1), rgb(85, 51, 108).
Aa
White text reads best on this color (10.11:1).
About this color
#55336C is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.100 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.059 away. White text reads best on it, at 10.11:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.07:1 |
| White text | 10.11:1 |
Values
| HEX | #55336C |
| RGB | rgb(85, 51, 108) |
| HSL | hsl(276, 36%, 31%) |
| OKLCH | oklch(38.9% 0.1 310.1) |
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 #55336C | 10.11:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #55336C | 2.07:1 | Fails | Lc 10.7 | Not readable |
| #55336C text on white | 10.11:1 | AAA | Lc 93.2 | Preferred for body text |
| #55336C text on black | 2.07:1 | Fails | Lc -9.2 | 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 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
#E2D2EE
oklch(88.5% 0.042 310.9)
-
Step 300
300
#D0B4E5
oklch(81% 0.074 310.5)
-
Step 400
400
#B88BD8
oklch(70.8% 0.119 310.4)
-
Step 500
500
#A66CCE
oklch(63.2% 0.153 310)
-
Step 600
600
#9151BB
oklch(55.6% 0.167 309.9)
-
Step 700
700
#7B41A1
oklch(49.1% 0.155 309.7)
-
Step 800
800
#643682
oklch(42.6% 0.128 310)
-
Step 900
900 (this color)
#55336C
oklch(38.9% 0.1 310.1)
-
Step 950
950
#301D3D
oklch(27.1% 0.062 310.2)
#55336C 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) | #24406E | 0.081 |
| Deuteranopia (no green cones) | #2E426B | 0.073 |
| Tritanopia (no blue cones) | #523C4A | 0.070 |
| Achromatopsia (no color) | #424242 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55336C
#55336C
oklch(38.9% 0.1 310.1)
- #324F07
#324F07
oklch(39% 0.1 130.3)
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 #55336C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.059
- Grape Purple #5D1451 ΔE 0.074
- Blueberry #464196 ΔE 0.078
- Rebecca Purple #663399 ΔE 0.081
- Twilight #4E518B ΔE 0.087
- Dusk #4E5481 ΔE 0.091
- Purple Brown #673A3F ΔE 0.093
- Rich Purple #720058 ΔE 0.093
Use #55336C 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.