#591B80
Closest named color: Indigo (#4B0082). oklch(37.5% 0.16 308.3), rgb(89, 27, 128).
Aa
White text reads best on this color (11.09:1).
About this color
#591B80 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.160 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.045 away. White text reads best on it, at 11.09:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.89:1 |
| White text | 11.09:1 |
Values
| HEX | #591B80 |
| RGB | rgb(89, 27, 128) |
| HSL | hsl(277, 65%, 30%) |
| OKLCH | oklch(37.5% 0.16 308.3) |
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 #591B80 | 11.09:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #591B80 | 1.89:1 | Fails | Lc 9.2 | Not readable |
| #591B80 text on white | 11.09:1 | AAA | Lc 94.7 | Preferred for body text |
| #591B80 text on black | 1.89:1 | Fails | Lc -7.9 | 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
#F0E4FC
oklch(93.5% 0.034 308.1)
-
Step 200
200
#E5CEFC
oklch(88.5% 0.067 307.6)
-
Step 300
300
#D6ABFC
oklch(80.8% 0.12 308.2)
-
Step 400
400
#C279FB
oklch(70.6% 0.193 308.2)
-
Step 500
500
#B34DF8
oklch(63.1% 0.246 308.1)
-
Step 600
600
#9F1EE6
oklch(55.5% 0.267 308.3)
-
Step 700
700
#8805C8
oklch(49% 0.248 308.2)
-
Step 800
800
#6F11A2
oklch(42.7% 0.206 308.4)
-
Step 900
900 (this color)
#591B80
oklch(37.5% 0.16 308.3)
-
Step 950
950
#34134B
oklch(27% 0.101 308.1)
#591B80 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) | #003983 | 0.128 |
| Deuteranopia (no green cones) | #003C7E | 0.130 |
| Tritanopia (no blue cones) | #53344D | 0.110 |
| Achromatopsia (no color) | #3C3C3C | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #591B80
#591B80
oklch(37.5% 0.16 308.3)
- #314A00
#314A00
oklch(37.4% 0.098 128.3)
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 #591B80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.045
- Royal Purple #4B006E ΔE 0.056
- Rebecca Purple #663399 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.076
- Imperial Purple #480CA8 ΔE 0.080
- Grape Purple #5D1451 ΔE 0.082
- Purple #800080 ΔE 0.083
Use #591B80 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.