#554B9D
Closest named color: Twilight (#4E518B). oklch(46.5% 0.129 285.8), rgb(85, 75, 157).
Aa
White text reads best on this color (7.29:1).
About this color
#554B9D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.129 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 7.29:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #554B9D |
| RGB | rgb(85, 75, 157) |
| HSL | hsl(247, 35%, 45%) |
| OKLCH | oklch(46.5% 0.129 285.8) |
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 #554B9D | 7.29:1 | AAA | Lc -90.0 | Preferred for body text |
| Black text on #554B9D | 2.87:1 | Fails | Lc 18.9 | Dividers and decoration only |
| #554B9D text on white | 7.29:1 | AAA | Lc 85.1 | Fine for body text |
| #554B9D text on black | 2.87:1 | Fails | Lc -16.9 | 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
#E8E8F6
oklch(93.5% 0.019 286)
-
Step 200
200
#D6D6F0
oklch(88.4% 0.036 285.7)
-
Step 300
300
#BCBBE8
oklch(80.8% 0.063 285.9)
-
Step 400
400
#9B97DC
oklch(70.6% 0.1 286.2)
-
Step 500
500
#837CD2
oklch(63% 0.127 285.8)
-
Step 600
600
#6E64C0
oklch(55.6% 0.139 285.9)
-
Step 700
700 (this color)
#554B9D
oklch(46.5% 0.129 285.8)
-
Step 800
800
#4B4486
oklch(42.7% 0.106 285.8)
-
Step 900
900
#3E3A6B
oklch(37.7% 0.082 285.5)
-
Step 950
950
#24223F
oklch(27% 0.053 285.4)
#554B9D 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) | #2559A0 | 0.064 |
| Deuteranopia (no green cones) | #23549B | 0.063 |
| Tritanopia (no blue cones) | #3E5C6D | 0.107 |
| Achromatopsia (no color) | #565656 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #554B9D
#554B9D
oklch(46.5% 0.129 285.8)
- #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 #554B9D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Blueberry #464196 ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.051
- Dusk #4E5481 ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.059
- Rebecca Purple #663399 ΔE 0.060
- Dusky Blue #475F94 ΔE 0.061
- Dusk Blue #26538D ΔE 0.068
Use #554B9D 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.