#553883
Closest named color: Dark Slate Blue (#483D8B). oklch(41.3% 0.122 298.8), rgb(85, 56, 131).
Aa
White text reads best on this color (9.21:1).
About this color
#553883 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.122 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.028 away. White text reads best on it, at 9.21:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.21:1 |
Values
| HEX | #553883 |
| RGB | rgb(85, 56, 131) |
| HSL | hsl(263, 40%, 37%) |
| OKLCH | oklch(41.3% 0.122 298.8) |
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 #553883 | 9.21:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #553883 | 2.27:1 | Fails | Lc 13.0 | Not readable |
| #553883 text on white | 9.21:1 | AAA | Lc 91.0 | Preferred for body text |
| #553883 text on black | 2.27:1 | Fails | Lc -11.4 | 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
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DCD4F0
oklch(88.5% 0.039 298.7)
-
Step 300
300
#C6B7E9
oklch(80.9% 0.071 298.5)
-
Step 400
400
#AA90DE
oklch(70.6% 0.115 298.8)
-
Step 500
500
#9673D5
oklch(63.1% 0.146 298.6)
-
Step 600
600
#8159C2
oklch(55.6% 0.159 298.7)
-
Step 700
700
#6D48A7
oklch(49% 0.148 298.8)
-
Step 800
800 (this color)
#553883
oklch(41.3% 0.122 298.8)
-
Step 900
900
#49346C
oklch(37.7% 0.095 299.1)
-
Step 950
950
#2B1F40
oklch(27.1% 0.061 299.1)
#553883 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) | #184886 | 0.086 |
| Deuteranopia (no green cones) | #224781 | 0.079 |
| Tritanopia (no blue cones) | #4B4758 | 0.094 |
| Achromatopsia (no color) | #484848 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553883
#553883
oklch(41.3% 0.122 298.8)
- #465200
#465200
oklch(41.3% 0.097 119)
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 #553883, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.028
- Blueberry #464196 ΔE 0.043
- Rebecca Purple #663399 ΔE 0.049
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.077
- Cobalt #1E488F ΔE 0.082
- Dusk Blue #26538D ΔE 0.090
- Indigo #4B0082 ΔE 0.094
Use #553883 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.