#55508D
Closest named color: Twilight (#4E518B). oklch(46.5% 0.097 285.7), rgb(85, 80, 141).
Aa
White text reads best on this color (7.19:1).
About this color
#55508D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.097 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.012 away. White text reads best on it, at 7.19:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #55508D |
| RGB | rgb(85, 80, 141) |
| HSL | hsl(245, 28%, 43%) |
| OKLCH | oklch(46.5% 0.097 285.7) |
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 #55508D | 7.19:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #55508D | 2.91:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #55508D text on white | 7.19:1 | AAA | Lc 84.9 | Fine for body text |
| #55508D text on black | 2.91:1 | Fails | Lc -17.1 | 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 700.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D7D7EA
oklch(88.5% 0.026 285.9)
-
Step 300
300
#BDBDDE
oklch(80.9% 0.046 285.3)
-
Step 400
400
#9C9ACE
oklch(70.7% 0.075 286.1)
-
Step 500
500
#8481C1
oklch(63.1% 0.095 285.5)
-
Step 600
600
#6E69AE
oklch(55.6% 0.106 285.7)
-
Step 700
700 (this color)
#55508D
oklch(46.5% 0.097 285.7)
-
Step 800
800
#4B4879
oklch(42.7% 0.08 285.3)
-
Step 900
900
#3F3C61
oklch(37.6% 0.063 286.7)
-
Step 950
950
#252439
oklch(27.2% 0.039 285.7)
#55508D 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) | #3B598F | 0.041 |
| Deuteranopia (no green cones) | #3A568C | 0.039 |
| Tritanopia (no blue cones) | #455C67 | 0.084 |
| Achromatopsia (no color) | #575757 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55508D
#55508D
oklch(46.5% 0.097 285.7)
- #615C04
#615C04
oklch(46.5% 0.097 105.9)
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 #55508D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.012
- Dusk #4E5481 ΔE 0.027
- Denim Blue #3B5B92 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.043
- Dusty Grape #545775 ΔE 0.049
- Blueberry #464196 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
Use #55508D 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.