#553357
Closest named color: Purple Brown (#673A3F). oklch(37.7% 0.074 324.9), rgb(85, 51, 87).
Aa
White text reads best on this color (10.51:1).
About this color
#553357 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.074 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.063 away. White text reads best on it, at 10.51:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.074) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 1.99:1 |
| White text | 10.51:1 |
Values
| HEX | #553357 |
| RGB | rgb(85, 51, 87) |
| HSL | hsl(297, 26%, 27%) |
| OKLCH | oklch(37.7% 0.074 324.9) |
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 #553357 | 10.51:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #553357 | 1.99:1 | Fails | Lc 9.7 | Not readable |
| #553357 text on white | 10.51:1 | AAA | Lc 94.2 | Preferred for body text |
| #553357 text on black | 1.99:1 | Fails | Lc -8.3 | 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
#F8F4F8
oklch(97.1% 0.007 325.6)
-
Step 100
100
#F0E6F0
oklch(93.6% 0.017 325.7)
-
Step 200
200
#E4D3E5
oklch(88.6% 0.03 324.2)
-
Step 300
300
#D3B5D5
oklch(80.9% 0.055 324.1)
-
Step 400
400
#BD8EBF
oklch(70.8% 0.088 325.1)
-
Step 500
500
#AC71AF
oklch(63.2% 0.112 325.1)
-
Step 600
600
#97589B
oklch(55.7% 0.123 324.9)
-
Step 700
700
#804884
oklch(49.1% 0.113 324.7)
-
Step 800
800
#683B6B
oklch(42.6% 0.094 324.8)
-
Step 900
900 (this color)
#553357
oklch(37.7% 0.074 324.9)
-
Step 950
950
#321E33
oklch(27% 0.047 325.1)
#553357 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) | #303C58 | 0.067 |
| Deuteranopia (no green cones) | #384156 | 0.063 |
| Tritanopia (no blue cones) | #573741 | 0.044 |
| Achromatopsia (no color) | #3F3F3F | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553357
#553357
oklch(37.7% 0.074 324.9)
- #264C28
#264C28
oklch(37.8% 0.074 145)
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 #553357, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.063
- Grape Purple #5D1451 ΔE 0.066
- Charcoal Grey #3C4142 ΔE 0.077
- Onyx #343A40 ΔE 0.078
- Dark Grey Blue #29465B ΔE 0.084
- Brownish Purple #76424E ΔE 0.085
- Velvet #750851 ΔE 0.089
- Dark Slate Blue #483D8B ΔE 0.090
Use #553357 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.