#551D63
Closest named color: Grape Purple (#5D1451). oklch(35% 0.126 319), rgb(85, 29, 99).
Aa
White text reads best on this color (12.05:1).
About this color
#551D63 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.126 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.037 away. White text reads best on it, at 12.05:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.74:1 |
| White text | 12.05:1 |
Values
| HEX | #551D63 |
| RGB | rgb(85, 29, 99) |
| HSL | hsl(288, 55%, 25%) |
| OKLCH | oklch(35% 0.126 319) |
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 #551D63 | 12.05:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #551D63 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #551D63 text on white | 12.05:1 | AAA | Lc 96.9 | Preferred for body text |
| #551D63 text on black | 1.74:1 | Fails | Lc 0.0 | 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
#F9F3FB
oklch(97.1% 0.012 317.7)
-
Step 100
100
#F2E4F6
oklch(93.5% 0.028 318.7)
-
Step 200
200
#E9CFF0
oklch(88.6% 0.053 319)
-
Step 300
300
#DBADE8
oklch(80.8% 0.095 318.7)
-
Step 400
400
#C87FDC
oklch(70.6% 0.152 318.8)
-
Step 500
500
#BA5AD2
oklch(63.1% 0.194 319.2)
-
Step 600
600
#A53ABF
oklch(55.6% 0.211 319.1)
-
Step 700
700
#8D2BA5
oklch(49.1% 0.196 318.9)
-
Step 800
800
#732686
oklch(42.8% 0.162 319)
-
Step 900
900 (this color)
#551D63
oklch(35% 0.126 319)
-
Step 950
950
#37173F
oklch(27.1% 0.08 319.2)
#551D63 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) | #043265 | 0.125 |
| Deuteranopia (no green cones) | #213861 | 0.108 |
| Tritanopia (no blue cones) | #552A3D | 0.080 |
| Achromatopsia (no color) | #363636 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551D63
#551D63
oklch(35% 0.126 319)
- #154700
#154700
oklch(35% 0.11 138.9)
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 #551D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.037
- Plum Purple #4E0550 ΔE 0.051
- Royal Purple #4B006E ΔE 0.052
- Deep Violet #490648 ΔE 0.065
- Rich Purple #720058 ΔE 0.068
- Indigo #4B0082 ΔE 0.070
- Velvet #750851 ΔE 0.077
- Eggplant Purple #430541 ΔE 0.082
Use #551D63 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.