#554C73
Closest named color: Dusk (#4E5481). oklch(44.2% 0.064 294.2), rgb(85, 76, 115).
Aa
White text reads best on this color (7.87:1).
About this color
#554C73 is a dark, muted purple. In OKLCH its lightness is 44%, its chroma 0.064 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.029 away. White text reads best on it, at 7.87:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.66:1 |
| White text | 7.87:1 |
Values
| HEX | #554C73 |
| RGB | rgb(85, 76, 115) |
| HSL | hsl(254, 20%, 37%) |
| OKLCH | oklch(44.2% 0.064 294.2) |
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 #554C73 | 7.87:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #554C73 | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #554C73 text on white | 7.87:1 | AAA | Lc 87.3 | Fine for body text |
| #554C73 text on black | 2.66:1 | Fails | Lc -14.8 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9F1
oklch(93.7% 0.011 291.9)
-
Step 200
200
#D9D7E6
oklch(88.5% 0.021 292.1)
-
Step 300
300
#C1BCD7
oklch(80.8% 0.038 294)
-
Step 400
400
#A29AC3
oklch(70.7% 0.06 293.8)
-
Step 500
500
#8C81B3
oklch(63.2% 0.075 294.2)
-
Step 600
600
#766A9F
oklch(55.7% 0.082 294)
-
Step 700
700
#635888
oklch(49.1% 0.076 293.9)
-
Step 800
800 (this color)
#554C73
oklch(44.2% 0.064 294.2)
-
Step 900
900
#433C5A
oklch(37.6% 0.051 294.5)
-
Step 950
950
#272334
oklch(26.8% 0.032 295)
#554C73 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) | #425275 | 0.032 |
| Deuteranopia (no green cones) | #435172 | 0.030 |
| Tritanopia (no blue cones) | #4F535A | 0.054 |
| Achromatopsia (no color) | #525252 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #554C73
#554C73
oklch(44.2% 0.064 294.2)
- #52572C
#52572C
oklch(44.1% 0.064 114.5)
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 #554C73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.029
- Dusty Grape #545775 ΔE 0.032
- Twilight #4E518B ΔE 0.040
- YInMn Blue #415A77 ΔE 0.047
- Light Navy Blue #2E5A88 ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.065
- Dusky Blue #475F94 ΔE 0.068
- Dark Slate Blue #483D8B ΔE 0.068
Use #554C73 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.