#553B97
Closest named color: Blueberry (#464196). oklch(43.2% 0.144 292.3), rgb(85, 59, 151).
Aa
White text reads best on this color (8.54:1).
About this color
#553B97 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.144 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.028 away. White text reads best on it, at 8.54:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.45:1 |
| White text | 8.54:1 |
Values
| HEX | #553B97 |
| RGB | rgb(85, 59, 151) |
| HSL | hsl(257, 44%, 41%) |
| OKLCH | oklch(43.2% 0.144 292.3) |
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 #553B97 | 8.54:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #553B97 | 2.45:1 | Fails | Lc 15.0 | Not readable |
| #553B97 text on white | 8.54:1 | AAA | Lc 89.0 | Fine for body text |
| #553B97 text on black | 2.45:1 | Fails | Lc -13.2 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C1B7F3
oklch(80.8% 0.084 292)
-
Step 400
400
#A390ED
oklch(70.8% 0.134 292)
-
Step 500
500
#8E71E7
oklch(63.1% 0.172 292.1)
-
Step 600
600
#7A56D5
oklch(55.7% 0.187 292.3)
-
Step 700
700
#6745B9
oklch(49.2% 0.174 292.3)
-
Step 800
800 (this color)
#553B97
oklch(43.2% 0.144 292.3)
-
Step 900
900
#453377
oklch(37.8% 0.112 292.4)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#553B97 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) | #004E9A | 0.092 |
| Deuteranopia (no green cones) | #024B95 | 0.091 |
| Tritanopia (no blue cones) | #435063 | 0.116 |
| Achromatopsia (no color) | #4C4C4C | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553B97
#553B97
oklch(43.2% 0.144 292.3)
- #525500
#525500
oklch(43.2% 0.096 112.1)
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 #553B97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.028
- Dark Slate Blue #483D8B ΔE 0.030
- Rebecca Purple #663399 ΔE 0.034
- Twilight #4E518B ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.077
- Cobalt #1E488F ΔE 0.079
- Dusk #4E5481 ΔE 0.081
Use #553B97 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.