#553375
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.112 305.7), rgb(85, 51, 117).
Aa
White text reads best on this color (9.92:1).
About this color
#553375 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.112 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.047 away. White text reads best on it, at 9.92:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #553375 |
| RGB | rgb(85, 51, 117) |
| HSL | hsl(271, 39%, 33%) |
| OKLCH | oklch(39.4% 0.112 305.7) |
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 #553375 | 9.92:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #553375 | 2.11:1 | Fails | Lc 11.2 | Not readable |
| #553375 text on white | 9.92:1 | AAA | Lc 92.7 | Preferred for body text |
| #553375 text on black | 2.11:1 | Fails | Lc -9.7 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F7
oklch(93.6% 0.024 307)
-
Step 200
200
#E0D2F2
oklch(88.5% 0.046 305.2)
-
Step 300
300
#CEB3EC
oklch(80.9% 0.084 306.1)
-
Step 400
400
#B589E3
oklch(70.7% 0.135 305.7)
-
Step 500
500
#A369DA
oklch(63.1% 0.171 305.8)
-
Step 600
600
#8E4DC8
oklch(55.6% 0.187 305.5)
-
Step 700
700
#793DAD
oklch(49.1% 0.174 305.5)
-
Step 800
800
#62338C
oklch(42.6% 0.144 305.4)
-
Step 900
900 (this color)
#553375
oklch(39.4% 0.112 305.7)
-
Step 950
950
#2F1C41
oklch(27% 0.07 306)
#553375 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) | #1D4277 | 0.088 |
| Deuteranopia (no green cones) | #284373 | 0.079 |
| Tritanopia (no blue cones) | #503F4F | 0.081 |
| Achromatopsia (no color) | #434343 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553375
#553375
oklch(39.4% 0.112 305.7)
- #394F00
#394F00
oklch(39.5% 0.1 125.8)
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 #553375, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.047
- Blueberry #464196 ΔE 0.066
- Rebecca Purple #663399 ΔE 0.067
- Twilight #4E518B ΔE 0.082
- Grape Purple #5D1451 ΔE 0.083
- Indigo #4B0082 ΔE 0.088
- Dusk #4E5481 ΔE 0.088
- Royal Purple #4B006E ΔE 0.091
Use #553375 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.