#553390
Closest named color: Dark Slate Blue (#483D8B). oklch(41.4% 0.147 296.2), rgb(85, 51, 144).
Aa
White text reads best on this color (9.28:1).
About this color
#553390 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.147 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.28:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.28:1 |
Values
| HEX | #553390 |
| RGB | rgb(85, 51, 144) |
| HSL | hsl(262, 48%, 38%) |
| OKLCH | oklch(41.4% 0.147 296.2) |
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 #553390 | 9.28:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #553390 | 2.26:1 | Fails | Lc 13.0 | Not readable |
| #553390 text on white | 9.28:1 | AAA | Lc 91.0 | Preferred for body text |
| #553390 text on black | 2.26:1 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DBD3F6
oklch(88.4% 0.048 295.9)
-
Step 300
300
#C5B6F2
oklch(80.9% 0.085 295.9)
-
Step 400
400
#A98DEC
oklch(70.7% 0.138 296.3)
-
Step 500
500
#956EE5
oklch(63.1% 0.174 296.2)
-
Step 600
600
#8152D3
oklch(55.6% 0.19 296.5)
-
Step 700
700
#6D41B7
oklch(49% 0.178 296.4)
-
Step 800
800 (this color)
#553390
oklch(41.4% 0.147 296.2)
-
Step 900
900
#483176
oklch(37.7% 0.114 295.8)
-
Step 950
950
#2A1D45
oklch(26.9% 0.073 296.2)
#553390 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) | #004893 | 0.099 |
| Deuteranopia (no green cones) | #00468E | 0.099 |
| Tritanopia (no blue cones) | #46485C | 0.115 |
| Achromatopsia (no color) | #474747 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553390
#553390
oklch(41.4% 0.147 296.2)
- #495100
#495100
oklch(41.3% 0.095 116.1)
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 #553390, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Rebecca Purple #663399 ΔE 0.035
- Blueberry #464196 ΔE 0.040
- Chrysanthemum #560BAD ΔE 0.070
- Imperial Purple #480CA8 ΔE 0.075
- Twilight #4E518B ΔE 0.078
- Indigo #4B0082 ΔE 0.083
- Cobalt #1E488F ΔE 0.086
Use #553390 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.