#553A95
Closest named color: Dark Slate Blue (#483D8B). oklch(42.9% 0.143 293.1), rgb(85, 58, 149).
Aa
White text reads best on this color (8.65:1).
About this color
#553A95 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.143 and its hue 293°. 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 8.65:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.42:1 |
| White text | 8.65:1 |
Values
| HEX | #553A95 |
| RGB | rgb(85, 58, 149) |
| HSL | hsl(258, 44%, 41%) |
| OKLCH | oklch(42.9% 0.143 293.1) |
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 #553A95 | 8.65:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #553A95 | 2.42:1 | Fails | Lc 14.6 | Not readable |
| #553A95 text on white | 8.65:1 | AAA | Lc 89.3 | Fine for body text |
| #553A95 text on black | 2.42:1 | Fails | Lc -12.9 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#DAD4F6
oklch(88.5% 0.047 293.5)
-
Step 300
300
#C2B7F2
oklch(80.9% 0.083 293)
-
Step 400
400
#A48FEC
oklch(70.6% 0.134 293)
-
Step 500
500
#9071E6
oklch(63.2% 0.171 293.1)
-
Step 600
600
#7B55D4
oklch(55.6% 0.187 293.1)
-
Step 700
700
#6845B7
oklch(49.1% 0.172 293.2)
-
Step 800
800 (this color)
#553A95
oklch(42.9% 0.143 293.1)
-
Step 900
900
#453376
oklch(37.7% 0.11 292.7)
-
Step 950
950
#281E45
oklch(26.9% 0.071 292.9)
#553A95 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) | #004D98 | 0.093 |
| Deuteranopia (no green cones) | #044A93 | 0.091 |
| Tritanopia (no blue cones) | #444E62 | 0.113 |
| Achromatopsia (no color) | #4B4B4B | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553A95
#553A95
oklch(42.9% 0.143 293.1)
- #505400
#505400
oklch(42.8% 0.095 112.9)
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 #553A95, 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 0.029
- Rebecca Purple #663399 ΔE 0.034
- Twilight #4E518B ΔE 0.064
- Chrysanthemum #560BAD ΔE 0.077
- Blue With A Hint Of Purple #533CC6 ΔE 0.079
- Cobalt #1E488F ΔE 0.079
- Dusk #4E5481 ΔE 0.081
Use #553A95 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.