#55217D
Closest named color: Indigo (#4B0082). oklch(37.4% 0.149 306.2), rgb(85, 33, 125).
Aa
White text reads best on this color (11.05:1).
About this color
#55217D is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.149 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.048 away. White text reads best on it, at 11.05:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.89:1 |
| White text | 11.05:1 |
Values
| HEX | #55217D |
| RGB | rgb(85, 33, 125) |
| HSL | hsl(274, 58%, 31%) |
| OKLCH | oklch(37.4% 0.149 306.2) |
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 #55217D | 11.05:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #55217D | 1.89:1 | Fails | Lc 9.1 | Not readable |
| #55217D text on white | 11.05:1 | AAA | Lc 94.8 | Preferred for body text |
| #55217D text on black | 1.89:1 | Fails | Lc -7.8 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EFE5FB
oklch(93.6% 0.031 306.2)
-
Step 200
200
#E3CFFA
oklch(88.4% 0.062 306.2)
-
Step 300
300
#D3AEFA
oklch(81% 0.112 306.3)
-
Step 400
400
#BD7EF7
oklch(70.7% 0.179 306.4)
-
Step 500
500
#AD56F3
oklch(63.1% 0.228 306.4)
-
Step 600
600
#9931E2
oklch(55.7% 0.248 306.3)
-
Step 700
700
#821FC4
oklch(49% 0.231 306.1)
-
Step 800
800
#6A1F9F
oklch(42.8% 0.191 306.1)
-
Step 900
900 (this color)
#55217D
oklch(37.4% 0.149 306.2)
-
Step 950
950
#32164A
oklch(27% 0.094 305.8)
#55217D 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) | #003A80 | 0.117 |
| Deuteranopia (no green cones) | #003C7B | 0.119 |
| Tritanopia (no blue cones) | #4E364D | 0.104 |
| Achromatopsia (no color) | #3C3C3C | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55217D
#55217D
oklch(37.4% 0.149 306.2)
- #344900
#344900
oklch(37.4% 0.095 126.1)
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 #55217D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.048
- Royal Purple #4B006E ΔE 0.057
- Dark Slate Blue #483D8B ΔE 0.067
- Rebecca Purple #663399 ΔE 0.068
- Grape Purple #5D1451 ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.081
- Imperial Purple #480CA8 ΔE 0.082
- Blueberry #464196 ΔE 0.082
Use #55217D 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.