#55227A
Closest named color: Indigo (#4B0082). oklch(37.3% 0.144 307.3), rgb(85, 34, 122).
Aa
White text reads best on this color (11.07:1).
About this color
#55227A is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.144 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.051 away. White text reads best on it, at 11.07:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #55227A |
| RGB | rgb(85, 34, 122) |
| HSL | hsl(275, 56%, 31%) |
| OKLCH | oklch(37.3% 0.144 307.3) |
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 #55227A | 11.07:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #55227A | 1.89:1 | Fails | Lc 9.0 | Not readable |
| #55227A text on white | 11.07:1 | AAA | Lc 94.9 | Preferred for body text |
| #55227A text on black | 1.89:1 | Fails | Lc -7.7 | Not readable |
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 900.
-
Step 50
50
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#EFE5FB
oklch(93.6% 0.031 306.2)
-
Step 200
200
#E4CFF9
oklch(88.5% 0.061 307.7)
-
Step 300
300
#D3AEF7
oklch(80.9% 0.108 307.3)
-
Step 400
400
#BD7FF3
oklch(70.6% 0.173 307.2)
-
Step 500
500
#AD58EF
oklch(63.1% 0.222 307)
-
Step 600
600
#9934DD
oklch(55.5% 0.241 307.2)
-
Step 700
700
#8324C0
oklch(49.2% 0.224 307.2)
-
Step 800
800
#6A219B
oklch(42.6% 0.185 307.2)
-
Step 900
900 (this color)
#55227A
oklch(37.3% 0.144 307.3)
-
Step 950
950
#321648
oklch(26.9% 0.091 307.1)
#55227A 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) | #003A7D | 0.117 |
| Deuteranopia (no green cones) | #093C78 | 0.115 |
| Tritanopia (no blue cones) | #4F364B | 0.102 |
| Achromatopsia (no color) | #3C3C3C | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55227A
#55227A
oklch(37.3% 0.144 307.3)
- #324900
#324900
oklch(37.2% 0.096 127.3)
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 #55227A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.051
- Royal Purple #4B006E ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.067
- Rebecca Purple #663399 ΔE 0.070
- Grape Purple #5D1451 ΔE 0.075
- Blueberry #464196 ΔE 0.084
- Plum Purple #4E0550 ΔE 0.085
- Chrysanthemum #560BAD ΔE 0.087
Use #55227A 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.