#553189
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.141 298.8), rgb(85, 49, 137).
Aa
White text reads best on this color (9.60:1).
About this color
#553189 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.141 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 0.035 away. White text reads best on it, at 9.60:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #553189 |
| RGB | rgb(85, 49, 137) |
| HSL | hsl(265, 47%, 36%) |
| OKLCH | oklch(40.5% 0.141 298.8) |
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 #553189 | 9.60:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #553189 | 2.18:1 | Fails | Lc 12.1 | Not readable |
| #553189 text on white | 9.60:1 | AAA | Lc 91.8 | Preferred for body text |
| #553189 text on black | 2.18:1 | Fails | Lc -10.6 | 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
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F4
oklch(88.5% 0.046 299.3)
-
Step 300
300
#C7B5EF
oklch(80.8% 0.083 298.8)
-
Step 400
400
#AC8DE7
oklch(70.7% 0.132 298.9)
-
Step 500
500
#986EE0
oklch(63.1% 0.168 298.5)
-
Step 600
600
#8453CD
oklch(55.7% 0.182 298.9)
-
Step 700
700
#7042B2
oklch(49.1% 0.171 298.9)
-
Step 800
800 (this color)
#553189
oklch(40.5% 0.141 298.8)
-
Step 900
900
#4A3173
oklch(37.7% 0.11 298.5)
-
Step 950
950
#2B1D43
oklch(26.9% 0.07 298.6)
#553189 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) | #00458C | 0.102 |
| Deuteranopia (no green cones) | #094487 | 0.099 |
| Tritanopia (no blue cones) | #494458 | 0.107 |
| Achromatopsia (no color) | #454545 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553189
#553189
oklch(40.5% 0.141 298.8)
- #445000
#445000
oklch(40.6% 0.096 119.1)
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 #553189, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Rebecca Purple #663399 ΔE 0.042
- Blueberry #464196 ΔE 0.047
- Chrysanthemum #560BAD ΔE 0.076
- Indigo #4B0082 ΔE 0.077
- Imperial Purple #480CA8 ΔE 0.079
- Twilight #4E518B ΔE 0.081
- Cobalt #1E488F ΔE 0.090
Use #553189 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.