#55397D
Closest named color: Dark Slate Blue (#483D8B). oklch(41% 0.112 300.6), rgb(85, 57, 125).
Aa
White text reads best on this color (9.26:1).
About this color
#55397D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.112 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 0.033 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #55397D |
| RGB | rgb(85, 57, 125) |
| HSL | hsl(265, 37%, 36%) |
| OKLCH | oklch(41% 0.112 300.6) |
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 #55397D | 9.26:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #55397D | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #55397D text on white | 9.26:1 | AAA | Lc 91.1 | Preferred for body text |
| #55397D text on black | 2.26:1 | Fails | Lc -11.2 | 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
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DDD4EE
oklch(88.5% 0.037 301.4)
-
Step 300
300
#C7B7E5
oklch(80.8% 0.066 300.8)
-
Step 400
400
#AB91D8
oklch(70.6% 0.105 300.6)
-
Step 500
500
#9774CD
oklch(63% 0.134 300.8)
-
Step 600
600
#825BBA
oklch(55.5% 0.146 300.7)
-
Step 700
700
#6E4BA1
oklch(49.2% 0.135 300.3)
-
Step 800
800 (this color)
#55397D
oklch(41% 0.112 300.6)
-
Step 900
900
#493568
oklch(37.6% 0.087 300.4)
-
Step 950
950
#2B1F3D
oklch(26.9% 0.056 301.2)
#55397D 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) | #21477F | 0.079 |
| Deuteranopia (no green cones) | #29477B | 0.073 |
| Tritanopia (no blue cones) | #4D4655 | 0.086 |
| Achromatopsia (no color) | #474747 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55397D
#55397D
oklch(41% 0.112 300.6)
- #435200
#435200
oklch(41.1% 0.099 121)
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 #55397D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.033
- Blueberry #464196 ΔE 0.050
- Rebecca Purple #663399 ΔE 0.057
- Twilight #4E518B ΔE 0.064
- Dusk #4E5481 ΔE 0.073
- Cobalt #1E488F ΔE 0.084
- Dusty Grape #545775 ΔE 0.089
- Dusk Blue #26538D ΔE 0.089
Use #55397D 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.