#55406E
Closest named color: Dark Slate Blue (#483D8B). oklch(41.4% 0.078 304.2), rgb(85, 64, 110).
Aa
White text reads best on this color (8.95:1).
About this color
#55406E is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.078 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.056 away. White text reads best on it, at 8.95:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #55406E |
| RGB | rgb(85, 64, 110) |
| HSL | hsl(267, 26%, 34%) |
| OKLCH | oklch(41.4% 0.078 304.2) |
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 #55406E | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #55406E | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #55406E text on white | 8.95:1 | AAA | Lc 90.5 | Preferred for body text |
| #55406E text on black | 2.34:1 | Fails | Lc -11.8 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E7
oklch(88.5% 0.026 305.8)
-
Step 300
300
#C7BAD9
oklch(80.9% 0.045 304.4)
-
Step 400
400
#AA96C6
oklch(70.7% 0.072 303.6)
-
Step 500
500
#967BB8
oklch(63.1% 0.094 304.1)
-
Step 600
600
#8163A4
oklch(55.6% 0.103 304.5)
-
Step 700
700
#6D528C
oklch(49.1% 0.095 304.6)
-
Step 800
800 (this color)
#55406E
oklch(41.4% 0.078 304.2)
-
Step 900
900
#49395C
oklch(37.7% 0.061 304.6)
-
Step 950
950
#2B2236
oklch(27.2% 0.038 304.6)
#55406E 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) | #354970 | 0.054 |
| Deuteranopia (no green cones) | #3A496D | 0.048 |
| Tritanopia (no blue cones) | #514751 | 0.060 |
| Achromatopsia (no color) | #494949 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55406E
#55406E
oklch(41.4% 0.078 304.2)
- #42531F
#42531F
oklch(41.5% 0.079 124.9)
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 #55406E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.056
- Dusk #4E5481 ΔE 0.058
- Twilight #4E518B ΔE 0.060
- Dusty Grape #545775 ΔE 0.065
- Blueberry #464196 ΔE 0.071
- YInMn Blue #415A77 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.079
- Purple Brown #673A3F ΔE 0.082
Use #55406E 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.