#55559A
Closest named color: Twilight (#4E518B). oklch(48.3% 0.109 281.5), rgb(85, 85, 154).
Aa
White text reads best on this color (6.66:1).
About this color
#55559A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.109 and its hue 282°. 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 6.66:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #55559A |
| RGB | rgb(85, 85, 154) |
| HSL | hsl(240, 29%, 47%) |
| OKLCH | oklch(48.3% 0.109 281.5) |
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 #55559A | 6.66:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #55559A | 3.15:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #55559A text on white | 6.66:1 | AA | Lc 82.8 | Fine for body text |
| #55559A text on black | 3.15:1 | AA large text | Lc -19.1 | 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
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#BABDE3
oklch(80.9% 0.054 281.6)
-
Step 400
400
#979BD4
oklch(70.7% 0.083 280.9)
-
Step 500
500
#7F81C9
oklch(63.1% 0.107 281.6)
-
Step 600
600
#6969B6
oklch(55.6% 0.118 281.9)
-
Step 700
700 (this color)
#55559A
oklch(48.3% 0.109 281.5)
-
Step 800
800
#47487F
oklch(42.8% 0.09 281.1)
-
Step 900
900
#3B3C66
oklch(37.6% 0.071 281.4)
-
Step 950
950
#23243C
oklch(27.1% 0.044 281.2)
#55559A 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) | #3B5F9D | 0.040 |
| Deuteranopia (no green cones) | #375A98 | 0.040 |
| Tritanopia (no blue cones) | #3F6370 | 0.094 |
| Achromatopsia (no color) | #5C5C5C | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55559A
#55559A
oklch(48.3% 0.109 281.5)
- #6B6000
#6B6000
oklch(48.4% 0.101 101.6)
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 #55559A, 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 0.035
- Denim Blue #3B5B92 ΔE 0.040
- Dusk #4E5481 ΔE 0.042
- Denim #3B638C ΔE 0.058
- Light Navy Blue #2E5A88 ΔE 0.060
- Blueberry #464196 ΔE 0.060
- Dusty Grape #545775 ΔE 0.063
Use #55559A 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.