#554B78
Closest named color: Dusk (#4E5481). oklch(44.2% 0.073 293.4), rgb(85, 75, 120).
Aa
White text reads best on this color (7.88:1).
About this color
#554B78 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.073 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.027 away. White text reads best on it, at 7.88:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #554B78 |
| RGB | rgb(85, 75, 120) |
| HSL | hsl(253, 23%, 38%) |
| OKLCH | oklch(44.2% 0.073 293.4) |
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 #554B78 | 7.88:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #554B78 | 2.66:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #554B78 text on white | 7.88:1 | AAA | Lc 87.3 | Fine for body text |
| #554B78 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#D9D6E8
oklch(88.4% 0.025 293.5)
-
Step 300
300
#C1BCDA
oklch(80.9% 0.042 293.1)
-
Step 400
400
#A299C8
oklch(70.7% 0.068 293.3)
-
Step 500
500
#8C7FBA
oklch(63.1% 0.088 293.8)
-
Step 600
600
#7668A6
oklch(55.6% 0.095 293.4)
-
Step 700
700
#63568E
oklch(49% 0.089 293.5)
-
Step 800
800 (this color)
#554B78
oklch(44.2% 0.073 293.4)
-
Step 900
900
#433C5D
oklch(37.8% 0.056 293.3)
-
Step 950
950
#272337
oklch(27% 0.037 292.9)
#554B78 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) | #3F527A | 0.036 |
| Deuteranopia (no green cones) | #405177 | 0.035 |
| Tritanopia (no blue cones) | #4D535C | 0.060 |
| Achromatopsia (no color) | #515151 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #554B78
#554B78
oklch(44.2% 0.073 293.4)
- #535724
#535724
oklch(44.1% 0.073 113.1)
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 #554B78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.027
- Twilight #4E518B ΔE 0.033
- Dusty Grape #545775 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.051
- Dark Slate Blue #483D8B ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.062
- Light Navy Blue #2E5A88 ΔE 0.063
- Dusky Blue #475F94 ΔE 0.065
Use #554B78 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.