#55537F
Closest named color: Dusk (#4E5481). oklch(46.3% 0.071 285.4), rgb(85, 83, 127).
Aa
White text reads best on this color (7.16:1).
About this color
#55537F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.011 away. White text reads best on it, at 7.16:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #55537F |
| RGB | rgb(85, 83, 127) |
| HSL | hsl(243, 21%, 41%) |
| OKLCH | oklch(46.3% 0.071 285.4) |
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 #55537F | 7.16:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #55537F | 2.93:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #55537F text on white | 7.16:1 | AAA | Lc 84.8 | Fine for body text |
| #55537F text on black | 2.93:1 | Fails | Lc -17.2 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D7D8E6
oklch(88.6% 0.019 282.7)
-
Step 300
300
#BEBED6
oklch(80.9% 0.034 285.6)
-
Step 400
400
#9D9CC2
oklch(70.7% 0.055 286.1)
-
Step 500
500
#8584B3
oklch(63.2% 0.07 285.2)
-
Step 600
600
#6F6D9E
oklch(55.6% 0.075 285.5)
-
Step 700
700 (this color)
#55537F
oklch(46.3% 0.071 285.4)
-
Step 800
800
#4C4A6E
oklch(42.7% 0.059 286.1)
-
Step 900
900
#3F3E59
oklch(37.7% 0.046 285.7)
-
Step 950
950
#252434
oklch(26.9% 0.03 287.1)
#55537F 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) | #465981 | 0.026 |
| Deuteranopia (no green cones) | #45567E | 0.024 |
| Tritanopia (no blue cones) | #4B5B63 | 0.061 |
| Achromatopsia (no color) | #585858 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55537F
#55537F
oklch(46.3% 0.071 285.4)
- #5F5B29
#5F5B29
oklch(46.3% 0.07 104.7)
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 #55537F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.011
- Dusty Grape #545775 ΔE 0.023
- Twilight #4E518B ΔE 0.024
- YInMn Blue #415A77 ΔE 0.039
- Dusky Blue #475F94 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.051
- Denim #3B638C ΔE 0.053
Use #55537F 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.