#554B9B
Closest named color: Twilight (#4E518B). oklch(46.4% 0.126 286.1), rgb(85, 75, 155).
Aa
White text reads best on this color (7.32:1).
About this color
#554B9B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.126 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.034 away. White text reads best on it, at 7.32:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #554B9B |
| RGB | rgb(85, 75, 155) |
| HSL | hsl(248, 35%, 45%) |
| OKLCH | oklch(46.4% 0.126 286.1) |
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 #554B9B | 7.32:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #554B9B | 2.86:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #554B9B text on white | 7.32:1 | AAA | Lc 85.3 | Fine for body text |
| #554B9B text on black | 2.86:1 | Fails | Lc -16.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E8E8F5
oklch(93.5% 0.017 286.1)
-
Step 200
200
#D7D6EF
oklch(88.5% 0.034 287.5)
-
Step 300
300
#BDBBE7
oklch(80.8% 0.062 287)
-
Step 400
400
#9B98DB
oklch(70.8% 0.097 285.7)
-
Step 500
500
#847DD1
oklch(63.2% 0.124 286.1)
-
Step 600
600
#6E64BE
oklch(55.5% 0.136 286.2)
-
Step 700
700 (this color)
#554B9B
oklch(46.4% 0.126 286.1)
-
Step 800
800
#4B4485
oklch(42.6% 0.105 286)
-
Step 900
900
#3F3A6A
oklch(37.7% 0.08 286.6)
-
Step 950
950
#24223E
oklch(26.9% 0.051 285.7)
#554B9B 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) | #27589E | 0.061 |
| Deuteranopia (no green cones) | #265499 | 0.061 |
| Tritanopia (no blue cones) | #3F5C6C | 0.106 |
| Achromatopsia (no color) | #565656 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #554B9B
#554B9B
oklch(46.4% 0.126 286.1)
- #615C00
#615C00
oklch(46.5% 0.099 106)
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 #554B9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.034
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.049
- Dusk #4E5481 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.057
- Dusky Blue #475F94 ΔE 0.059
- Rebecca Purple #663399 ΔE 0.060
- Dusk Blue #26538D ΔE 0.067
Use #554B9B 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.