#55558B
Closest named color: Twilight (#4E518B). oklch(47.4% 0.086 282.6), rgb(85, 85, 139).
Aa
White text reads best on this color (6.86:1).
About this color
#55558B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.086 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.017 away. White text reads best on it, at 6.86:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.05:1 |
| White text | 6.86:1 |
Values
| HEX | #55558B |
| RGB | rgb(85, 85, 139) |
| HSL | hsl(240, 24%, 44%) |
| OKLCH | oklch(47.4% 0.086 282.6) |
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 #55558B | 6.86:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #55558B | 3.05:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #55558B text on white | 6.86:1 | AA | Lc 83.7 | Fine for body text |
| #55558B text on black | 3.05:1 | AA large text | Lc -18.3 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D6D8E9
oklch(88.6% 0.023 280.6)
-
Step 300
300
#BCBEDC
oklch(81% 0.042 282.4)
-
Step 400
400
#9A9CCA
oklch(70.8% 0.067 282.6)
-
Step 500
500
#8283BC
oklch(63.2% 0.085 282.9)
-
Step 600
600
#6B6CA8
oklch(55.6% 0.092 282.2)
-
Step 700
700 (this color)
#55558B
oklch(47.4% 0.086 282.6)
-
Step 800
800
#494A75
oklch(42.8% 0.071 282)
-
Step 900
900
#3D3E5E
oklch(37.7% 0.054 282.1)
-
Step 950
950
#242437
oklch(26.9% 0.035 283.8)
#55558B 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) | #435C8D | 0.029 |
| Deuteranopia (no green cones) | #41598A | 0.029 |
| Tritanopia (no blue cones) | #465F69 | 0.074 |
| Achromatopsia (no color) | #5A5A5A | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55558B
#55558B
oklch(47.4% 0.086 282.6)
- #655E1A
#655E1A
oklch(47.5% 0.087 103.4)
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 #55558B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.017
- Dusk #4E5481 ΔE 0.020
- Dusky Blue #475F94 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.037
- Dusty Grape #545775 ΔE 0.039
- YInMn Blue #415A77 ΔE 0.049
- Denim #3B638C ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.050
Use #55558B 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.