#55397C
Closest named color: Dark Slate Blue (#483D8B). oklch(41% 0.111 300.9), rgb(85, 57, 124).
Aa
White text reads best on this color (9.28:1).
About this color
#55397C is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.111 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 0.034 away. White text reads best on it, at 9.28:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.111) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #55397C |
| RGB | rgb(85, 57, 124) |
| HSL | hsl(265, 37%, 35%) |
| OKLCH | oklch(41% 0.111 300.9) |
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 #55397C | 9.28:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #55397C | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #55397C text on white | 9.28:1 | AAA | Lc 91.2 | Preferred for body text |
| #55397C 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
#F6F4FA
oklch(97% 0.008 301.4)
-
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
#C7B8E5
oklch(81% 0.065 300.2)
-
Step 400
400
#AB91D7
oklch(70.6% 0.104 300.8)
-
Step 500
500
#9775CC
oklch(63.1% 0.131 300.7)
-
Step 600
600
#825CB9
oklch(55.6% 0.143 300.7)
-
Step 700
700
#6E4BA0
oklch(49.1% 0.134 300.6)
-
Step 800
800 (this color)
#55397C
oklch(41% 0.111 300.9)
-
Step 900
900
#4A3568
oklch(37.7% 0.087 301.3)
-
Step 950
950
#2B203D
oklch(27.1% 0.054 300.3)
#55397C 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) | #22477E | 0.078 |
| Deuteranopia (no green cones) | #29477A | 0.073 |
| Tritanopia (no blue cones) | #4D4655 | 0.085 |
| Achromatopsia (no color) | #474747 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55397C
#55397C
oklch(41% 0.111 300.9)
- #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 #55397C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.059
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.073
- Cobalt #1E488F ΔE 0.084
- Dusty Grape #545775 ΔE 0.088
- Dusk Blue #26538D ΔE 0.090
Use #55397C 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.