#55529B
Closest named color: Twilight (#4E518B). oklch(47.7% 0.115 283), rgb(85, 82, 155).
Aa
White text reads best on this color (6.84:1).
About this color
#55529B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.115 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.028 away. White text reads best on it, at 6.84:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #55529B |
| RGB | rgb(85, 82, 155) |
| HSL | hsl(242, 31%, 46%) |
| OKLCH | oklch(47.7% 0.115 283) |
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 #55529B | 6.84:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #55529B | 3.06:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #55529B text on white | 6.84:1 | AA | Lc 83.5 | Fine for body text |
| #55529B text on black | 3.06:1 | AA large text | Lc -18.4 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7EE
oklch(88.5% 0.031 283.8)
-
Step 300
300
#BBBDE4
oklch(81% 0.055 282.8)
-
Step 400
400
#989AD7
oklch(70.8% 0.089 282.4)
-
Step 500
500
#8080CC
oklch(63.2% 0.113 282.7)
-
Step 600
600
#6A68B9
oklch(55.7% 0.123 282.7)
-
Step 700
700 (this color)
#55529B
oklch(47.7% 0.115 283)
-
Step 800
800
#484781
oklch(42.7% 0.095 282.4)
-
Step 900
900
#3C3C68
oklch(37.8% 0.074 282.3)
-
Step 950
950
#23233D
oklch(27% 0.048 282.7)
#55529B 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) | #355D9E | 0.047 |
| Deuteranopia (no green cones) | #315899 | 0.047 |
| Tritanopia (no blue cones) | #3F616F | 0.098 |
| Achromatopsia (no color) | #5A5A5A | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55529B
#55529B
oklch(47.7% 0.115 283)
- #685F00
#685F00
oklch(47.9% 0.101 103.1)
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 #55529B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.028
- Dusky Blue #475F94 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.045
- Dusk #4E5481 ΔE 0.046
- Blueberry #464196 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.064
- Dusk Blue #26538D ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.064
Use #55529B 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.