#551357
Closest named color: Grape Purple (#5D1451). oklch(33.1% 0.128 326.7), rgb(85, 19, 87).
Aa
White text reads best on this color (12.98:1).
About this color
#551357 is a dark, moderately saturated purple. In OKLCH its lightness is 33%, its chroma 0.128 and its hue 327°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.023 away. White text reads best on it, at 12.98:1.
| Hue family | Purples |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.61:1 |
| White text | 12.98:1 |
Values
| HEX | #551357 |
| RGB | rgb(85, 19, 87) |
| HSL | hsl(298, 64%, 21%) |
| OKLCH | oklch(33.1% 0.128 326.7) |
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 #551357 | 12.98:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #551357 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #551357 text on white | 12.98:1 | AAA | Lc 98.3 | Preferred for body text |
| #551357 text on black | 1.61:1 | 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
#FAF3FA
oklch(97.2% 0.012 325.7)
-
Step 100
100
#F4E4F4
oklch(93.6% 0.027 325.8)
-
Step 200
200
#EDCDEC
oklch(88.4% 0.054 327)
-
Step 300
300
#E2ABE2
oklch(80.9% 0.097 326.4)
-
Step 400
400
#D27BD3
oklch(70.7% 0.155 326.7)
-
Step 500
500
#C454C6
oklch(63% 0.197 326.9)
-
Step 600
600
#AF32B3
oklch(55.5% 0.215 326.7)
-
Step 700
700
#96239A
oklch(49.1% 0.199 326.6)
-
Step 800
800
#7A207D
oklch(42.7% 0.165 326.6)
-
Step 900
900 (this color)
#551357
oklch(33.1% 0.128 326.7)
-
Step 950
950
#3A153B
oklch(27% 0.082 326.5)
#551357 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) | #042C59 | 0.137 |
| Deuteranopia (no green cones) | #243455 | 0.115 |
| Tritanopia (no blue cones) | #581E34 | 0.072 |
| Achromatopsia (no color) | #313131 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551357
#551357
oklch(33.1% 0.128 326.7)
- #004212
#004212
oklch(33% 0.099 146.7)
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 #551357, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.023
- Plum Purple #4E0550 ΔE 0.028
- Deep Violet #490648 ΔE 0.042
- Royal Purple #4B006E ΔE 0.055
- Eggplant Purple #430541 ΔE 0.060
- Rich Purple #720058 ΔE 0.063
- Velvet #750851 ΔE 0.072
- Indigo #4B0082 ΔE 0.084
Use #551357 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.