#554278
Closest named color: Dark Slate Blue (#483D8B). oklch(42.4% 0.089 298.8), rgb(85, 66, 120).
Aa
White text reads best on this color (8.61:1).
About this color
#554278 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.089 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 8.61:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #554278 |
| RGB | rgb(85, 66, 120) |
| HSL | hsl(261, 29%, 36%) |
| OKLCH | oklch(42.4% 0.089 298.8) |
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 #554278 | 8.61:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #554278 | 2.43:1 | Fails | Lc 14.5 | Not readable |
| #554278 text on white | 8.61:1 | AAA | Lc 89.5 | Fine for body text |
| #554278 text on black | 2.43:1 | Fails | Lc -12.8 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD5EA
oklch(88.4% 0.029 298.8)
-
Step 300
300
#C5BADE
oklch(81% 0.051 299.2)
-
Step 400
400
#A795CE
oklch(70.6% 0.084 298.7)
-
Step 500
500
#927AC1
oklch(63% 0.107 298.9)
-
Step 600
600
#7D62AD
oklch(55.5% 0.116 299.2)
-
Step 700
700
#695195
oklch(49% 0.108 298.6)
-
Step 800
800 (this color)
#554278
oklch(42.4% 0.089 298.8)
-
Step 900
900
#473961
oklch(37.8% 0.069 299.2)
-
Step 950
950
#292139
oklch(26.9% 0.045 298.7)
#554278 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) | #334C7A | 0.055 |
| Deuteranopia (no green cones) | #364B77 | 0.052 |
| Tritanopia (no blue cones) | #4E4B57 | 0.069 |
| Achromatopsia (no color) | #4C4C4C | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #554278
#554278
oklch(42.4% 0.089 298.8)
- #495511
#495511
oklch(42.5% 0.09 119.3)
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 #554278, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight #4E518B ΔE 0.047
- Dusk #4E5481 ΔE 0.050
- Blueberry #464196 ΔE 0.056
- Dusty Grape #545775 ΔE 0.062
- Rebecca Purple #663399 ΔE 0.073
- YInMn Blue #415A77 ΔE 0.074
- Dusk Blue #26538D ΔE 0.076
Use #554278 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.