#553B60
Closest named color: Purple Brown (#673A3F). oklch(39.7% 0.069 315.5), rgb(85, 59, 96).
Aa
White text reads best on this color (9.62:1).
About this color
#553B60 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.069 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.065 away. White text reads best on it, at 9.62:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.069) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #553B60 |
| RGB | rgb(85, 59, 96) |
| HSL | hsl(282, 24%, 30%) |
| OKLCH | oklch(39.7% 0.069 315.5) |
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 #553B60 | 9.62:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #553B60 | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #553B60 text on white | 9.62:1 | AAA | Lc 92.2 | Preferred for body text |
| #553B60 text on black | 2.18:1 | Fails | Lc -10.2 | 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 900.
-
Step 50
50
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F1
oklch(93.6% 0.015 316)
-
Step 200
200
#E1D4E6
oklch(88.6% 0.028 316.7)
-
Step 300
300
#CEB7D8
oklch(80.9% 0.052 315.7)
-
Step 400
400
#B591C4
oklch(70.7% 0.083 315.8)
-
Step 500
500
#A275B5
oklch(63.1% 0.106 315.5)
-
Step 600
600
#8D5DA1
oklch(55.7% 0.115 315.5)
-
Step 700
700
#784C89
oklch(49.1% 0.107 316.1)
-
Step 800
800
#613F70
oklch(42.7% 0.088 314.9)
-
Step 900
900 (this color)
#553B60
oklch(39.7% 0.069 315.5)
-
Step 950
950
#2F2035
oklch(27.1% 0.043 316)
#553B60 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) | #354361 | 0.056 |
| Deuteranopia (no green cones) | #3B465F | 0.052 |
| Tritanopia (no blue cones) | #554049 | 0.046 |
| Achromatopsia (no color) | #454545 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #553B60
#553B60
oklch(39.7% 0.069 315.5)
- #364F29
#364F29
oklch(39.7% 0.068 135.7)
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 #553B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.065
- Dark Grey Blue #29465B ΔE 0.075
- Charcoal Grey #3C4142 ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.075
- Brownish Purple #76424E ΔE 0.077
- Dusk #4E5481 ΔE 0.079
- Dusty Grape #545775 ΔE 0.080
- Onyx #343A40 ΔE 0.083
Use #553B60 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.