#591B68
Closest named color: Grape Purple (#5D1451). oklch(35.7% 0.136 319.1), rgb(89, 27, 104).
Aa
White text reads best on this color (11.78:1).
About this color
#591B68 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.136 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 0.042 away. White text reads best on it, at 11.78:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.78:1 |
| White text | 11.78:1 |
Values
| HEX | #591B68 |
| RGB | rgb(89, 27, 104) |
| HSL | hsl(288, 59%, 26%) |
| OKLCH | oklch(35.7% 0.136 319.1) |
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 #591B68 | 11.78:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #591B68 | 1.78:1 | Fails | Lc 7.6 | Not readable |
| #591B68 text on white | 11.78:1 | AAA | Lc 96.3 | Preferred for body text |
| #591B68 text on black | 1.78:1 | 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
#FAF3FB
oklch(97.2% 0.013 321.9)
-
Step 100
100
#F3E4F7
oklch(93.6% 0.03 319.1)
-
Step 200
200
#EACEF1
oklch(88.5% 0.056 319.5)
-
Step 300
300
#DDACEB
oklch(81% 0.101 318.6)
-
Step 400
400
#CB7CE0
oklch(70.7% 0.163 319)
-
Step 500
500
#BD54D7
oklch(63% 0.209 319.2)
-
Step 600
600
#A831C4
oklch(55.5% 0.226 319.1)
-
Step 700
700
#9021AA
oklch(49.1% 0.211 318.9)
-
Step 800
800
#751F89
oklch(42.6% 0.174 319.2)
-
Step 900
900 (this color)
#591B68
oklch(35.7% 0.136 319.1)
-
Step 950
950
#381540
oklch(27% 0.086 319.8)
#591B68 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) | #00346A | 0.135 |
| Deuteranopia (no green cones) | #203A66 | 0.117 |
| Tritanopia (no blue cones) | #592A3F | 0.086 |
| Achromatopsia (no color) | #383838 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #591B68
#591B68
oklch(35.7% 0.136 319.1)
- #154900
#154900
oklch(35.6% 0.113 139.1)
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 #591B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.042
- Royal Purple #4B006E ΔE 0.052
- Plum Purple #4E0550 ΔE 0.057
- Rich Purple #720058 ΔE 0.064
- Indigo #4B0082 ΔE 0.066
- Deep Violet #490648 ΔE 0.073
- Velvet #750851 ΔE 0.074
- Purple #800080 ΔE 0.090
Use #591B68 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.