#55357F
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.121 301.1), rgb(85, 53, 127).
Aa
White text reads best on this color (9.53:1).
About this color
#55357F is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.121 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #55357F |
| RGB | rgb(85, 53, 127) |
| HSL | hsl(266, 41%, 35%) |
| OKLCH | oklch(40.5% 0.121 301.1) |
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 #55357F | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #55357F | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #55357F text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #55357F text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C8B7E8
oklch(81% 0.07 300.7)
-
Step 400
400
#AD8FDC
oklch(70.6% 0.114 301.5)
-
Step 500
500
#9972D2
oklch(63.1% 0.144 301.1)
-
Step 600
600
#8458C0
oklch(55.6% 0.158 300.9)
-
Step 700
700
#7048A5
oklch(49.2% 0.146 301.1)
-
Step 800
800 (this color)
#55357F
oklch(40.5% 0.121 301.1)
-
Step 900
900
#4B346B
oklch(37.8% 0.094 301.4)
-
Step 950
950
#2C1F3F
oklch(27.1% 0.06 301.3)
#55357F 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) | #164581 | 0.090 |
| Deuteranopia (no green cones) | #22457D | 0.082 |
| Tritanopia (no blue cones) | #4D4454 | 0.093 |
| Achromatopsia (no color) | #454545 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55357F
#55357F
oklch(40.5% 0.121 301.1)
- #415000
#415000
oklch(40.4% 0.097 121.2)
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 #55357F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.053
- Twilight #4E518B ΔE 0.073
- Dusk #4E5481 ΔE 0.083
- Cobalt #1E488F ΔE 0.087
- Indigo #4B0082 ΔE 0.088
- Chrysanthemum #560BAD ΔE 0.096
Use #55357F 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.