#55347A
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.117 303.3), rgb(85, 52, 122).
Aa
White text reads best on this color (9.72:1).
About this color
#55347A is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.117 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.040 away. White text reads best on it, at 9.72:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.72:1 |
Values
| HEX | #55347A |
| RGB | rgb(85, 52, 122) |
| HSL | hsl(268, 40%, 34%) |
| OKLCH | oklch(40% 0.117 303.3) |
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 #55347A | 9.72:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #55347A | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #55347A text on white | 9.72:1 | AAA | Lc 92.3 | Preferred for body text |
| #55347A text on black | 2.15:1 | Fails | Lc -10.2 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F8
oklch(93.6% 0.025 303.5)
-
Step 200
200
#DFD2F4
oklch(88.5% 0.048 302.8)
-
Step 300
300
#CCB3EF
oklch(80.8% 0.087 303.5)
-
Step 400
400
#B389E8
oklch(70.7% 0.141 303.4)
-
Step 500
500
#A168E0
oklch(63.1% 0.179 303.6)
-
Step 600
600
#8C4CCE
oklch(55.6% 0.194 303.3)
-
Step 700
700
#773CB2
oklch(49.1% 0.18 303.3)
-
Step 800
800
#613390
oklch(42.8% 0.149 303.4)
-
Step 900
900 (this color)
#55347A
oklch(40% 0.117 303.3)
-
Step 950
950
#2E1C43
oklch(27% 0.072 303.2)
#55347A 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) | #1A437C | 0.088 |
| Deuteranopia (no green cones) | #254478 | 0.081 |
| Tritanopia (no blue cones) | #4E4151 | 0.087 |
| Achromatopsia (no color) | #444444 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55347A
#55347A
oklch(40% 0.117 303.3)
- #3D5000
#3D5000
oklch(40% 0.099 123.8)
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 #55347A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.040
- Blueberry #464196 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.060
- Twilight #4E518B ΔE 0.077
- Dusk #4E5481 ΔE 0.085
- Indigo #4B0082 ΔE 0.087
- Grape Purple #5D1451 ΔE 0.090
- Cobalt #1E488F ΔE 0.091
Use #55347A 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.