#55517F
Closest named color: Dusk (#4E5481). oklch(45.9% 0.074 287.1), rgb(85, 81, 127).
Aa
White text reads best on this color (7.31:1).
About this color
#55517F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.074 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.013 away. White text reads best on it, at 7.31:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.86:1 |
| White text | 7.31:1 |
Values
| HEX | #55517F |
| RGB | rgb(85, 81, 127) |
| HSL | hsl(245, 22%, 41%) |
| OKLCH | oklch(45.9% 0.074 287.1) |
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 #55517F | 7.31:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #55517F | 2.86:1 | Fails | Lc 18.6 | Dividers and decoration only |
| #55517F text on white | 7.31:1 | AAA | Lc 85.4 | Fine for body text |
| #55517F text on black | 2.86:1 | Fails | Lc -16.6 | Dividers and decoration only |
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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7E9
oklch(88.5% 0.025 288.4)
-
Step 300
300
#BEBDDC
oklch(80.9% 0.043 286.9)
-
Step 400
400
#9D9ACA
oklch(70.6% 0.07 287.3)
-
Step 500
500
#8681BD
oklch(63.1% 0.089 287.4)
-
Step 600
600
#706AA9
oklch(55.7% 0.096 287.2)
-
Step 700
700
#5E5891
oklch(49.1% 0.09 287.4)
-
Step 800
800 (this color)
#55517F
oklch(45.9% 0.074 287.1)
-
Step 900
900
#3F3D5F
oklch(37.7% 0.058 286)
-
Step 950
950
#252437
oklch(27% 0.035 286.2)
#55517F 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) | #445781 | 0.028 |
| Deuteranopia (no green cones) | #43557E | 0.028 |
| Tritanopia (no blue cones) | #4B5962 | 0.062 |
| Achromatopsia (no color) | #565656 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55517F
#55517F
oklch(45.9% 0.074 287.1)
- #5C5A25
#5C5A25
oklch(45.7% 0.074 107)
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 #55517F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.013
- Twilight #4E518B ΔE 0.022
- Dusty Grape #545775 ΔE 0.027
- YInMn Blue #415A77 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim #3B638C ΔE 0.057
Use #55517F 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.