#553372
Closest named color: Dark Slate Blue (#483D8B). oklch(39.3% 0.108 307), rgb(85, 51, 114).
Aa
White text reads best on this color (9.98:1).
About this color
#553372 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.108 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.051 away. White text reads best on it, at 9.98:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #553372 |
| RGB | rgb(85, 51, 114) |
| HSL | hsl(272, 38%, 32%) |
| OKLCH | oklch(39.3% 0.108 307) |
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 #553372 | 9.98:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #553372 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #553372 text on white | 9.98:1 | AAA | Lc 92.9 | Preferred for body text |
| #553372 text on black | 2.10:1 | Fails | Lc -9.5 | 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 900.
-
Step 50
50
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E1D2F1
oklch(88.5% 0.045 307.2)
-
Step 300
300
#CEB3EA
oklch(80.8% 0.081 306.9)
-
Step 400
400
#B68ADF
oklch(70.7% 0.129 307.2)
-
Step 500
500
#A46AD6
oklch(63.1% 0.165 307.1)
-
Step 600
600
#8F4EC3
oklch(55.5% 0.18 307.1)
-
Step 700
700
#7A3EA9
oklch(49.1% 0.168 307.1)
-
Step 800
800
#633489
oklch(42.7% 0.139 306.9)
-
Step 900
900 (this color)
#553372
oklch(39.3% 0.108 307)
-
Step 950
950
#2F1C40
oklch(27% 0.068 306.8)
#553372 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) | #204174 | 0.085 |
| Deuteranopia (no green cones) | #2A4370 | 0.078 |
| Tritanopia (no blue cones) | #513E4D | 0.078 |
| Achromatopsia (no color) | #424242 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553372
#553372
oklch(39.3% 0.108 307)
- #374F00
#374F00
oklch(39.3% 0.101 127)
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 #553372, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.069
- Rebecca Purple #663399 ΔE 0.071
- Grape Purple #5D1451 ΔE 0.079
- Twilight #4E518B ΔE 0.083
- Dusk #4E5481 ΔE 0.089
- Indigo #4B0082 ΔE 0.090
- Royal Purple #4B006E ΔE 0.091
Use #553372 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.