#591B6D
Closest named color: Royal Purple (#4B006E). oklch(36% 0.141 316.6), rgb(89, 27, 109).
Aa
White text reads best on this color (11.65:1).
About this color
#591B6D is a dark, vivid purple. In OKLCH its lightness is 36%, its chroma 0.141 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.050 away. White text reads best on it, at 11.65:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.80:1 |
| White text | 11.65:1 |
Values
| HEX | #591B6D |
| RGB | rgb(89, 27, 109) |
| HSL | hsl(285, 60%, 27%) |
| OKLCH | oklch(36% 0.141 316.6) |
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 #591B6D | 11.65:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #591B6D | 1.80:1 | Fails | Lc 7.9 | Not readable |
| #591B6D text on white | 11.65:1 | AAA | Lc 96.0 | Preferred for body text |
| #591B6D text on black | 1.80:1 | 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
#F9F3FC
oklch(97.1% 0.013 314.8)
-
Step 100
100
#F2E4F8
oklch(93.6% 0.031 315.9)
-
Step 200
200
#E9CEF4
oklch(88.6% 0.059 316.2)
-
Step 300
300
#DCABEE
oklch(80.8% 0.106 316.8)
-
Step 400
400
#CA7BE6
oklch(70.7% 0.17 316.7)
-
Step 500
500
#BB53DE
oklch(63.1% 0.216 316.6)
-
Step 600
600
#A72ECC
oklch(55.7% 0.236 316.7)
-
Step 700
700
#8F1DB0
oklch(49.1% 0.219 316.8)
-
Step 800
800
#741D8F
oklch(42.7% 0.181 316.5)
-
Step 900
900 (this color)
#591B6D
oklch(36% 0.141 316.6)
-
Step 950
950
#371543
oklch(27.1% 0.089 316.3)
#591B6D 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) | #00356F | 0.133 |
| Deuteranopia (no green cones) | #1B3A6B | 0.120 |
| Tritanopia (no blue cones) | #582C42 | 0.091 |
| Achromatopsia (no color) | #383838 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #591B6D
#591B6D
oklch(36% 0.141 316.6)
- #1E4900
#1E4900
oklch(36% 0.108 136.6)
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 #591B6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.050
- Grape Purple #5D1451 ΔE 0.050
- Indigo #4B0082 ΔE 0.060
- Plum Purple #4E0550 ΔE 0.063
- Rich Purple #720058 ΔE 0.068
- Deep Violet #490648 ΔE 0.079
- Velvet #750851 ΔE 0.080
- Purple #800080 ΔE 0.087
Use #591B6D 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.