#55478B
Closest named color: Twilight (#4E518B). oklch(44.6% 0.109 290.8), rgb(85, 71, 139).
Aa
White text reads best on this color (7.89:1).
About this color
#55478B is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.109 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.028 away. White text reads best on it, at 7.89:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.66:1 |
| White text | 7.89:1 |
Values
| HEX | #55478B |
| RGB | rgb(85, 71, 139) |
| HSL | hsl(252, 32%, 41%) |
| OKLCH | oklch(44.6% 0.109 290.8) |
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 #55478B | 7.89:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #55478B | 2.66:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #55478B text on white | 7.89:1 | AAA | Lc 87.2 | Fine for body text |
| #55478B text on black | 2.66:1 | Fails | Lc -14.9 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D6EF
oklch(88.5% 0.034 289.4)
-
Step 300
300
#C0BAE7
oklch(80.9% 0.063 291)
-
Step 400
400
#A095DB
oklch(70.6% 0.101 290.8)
-
Step 500
500
#8A7AD2
oklch(63.2% 0.13 290.5)
-
Step 600
600
#7561BF
oklch(55.6% 0.142 290.9)
-
Step 700
700
#6250A4
oklch(49.1% 0.13 290.7)
-
Step 800
800 (this color)
#55478B
oklch(44.6% 0.109 290.8)
-
Step 900
900
#42386B
oklch(37.7% 0.085 290.7)
-
Step 950
950
#27213F
oklch(27% 0.055 291.5)
#55478B 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) | #2E538D | 0.058 |
| Deuteranopia (no green cones) | #2F5089 | 0.056 |
| Tritanopia (no blue cones) | #475462 | 0.089 |
| Achromatopsia (no color) | #515151 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55478B
#55478B
oklch(44.6% 0.109 290.8)
- #575800
#575800
oklch(44.5% 0.097 110.5)
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 #55478B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.028
- Dark Slate Blue #483D8B ΔE 0.036
- Blueberry #464196 ΔE 0.037
- Dusk #4E5481 ΔE 0.044
- Rebecca Purple #663399 ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.061
- Dusty Grape #545775 ΔE 0.065
- Dusk Blue #26538D ΔE 0.065
Use #55478B 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.