#591A83
Closest named color: Indigo (#4B0082). oklch(37.7% 0.164 307.3), rgb(89, 26, 131).
Aa
White text reads best on this color (11.05:1).
About this color
#591A83 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.164 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.044 away. White text reads best on it, at 11.05:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.164) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.90:1 |
| White text | 11.05:1 |
Values
| HEX | #591A83 |
| RGB | rgb(89, 26, 131) |
| HSL | hsl(276, 67%, 31%) |
| OKLCH | oklch(37.7% 0.164 307.3) |
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 #591A83 | 11.05:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #591A83 | 1.90:1 | Fails | Lc 9.4 | Not readable |
| #591A83 text on white | 11.05:1 | AAA | Lc 94.5 | Preferred for body text |
| #591A83 text on black | 1.90:1 | Fails | Lc -8.0 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#F0E4FD
oklch(93.6% 0.036 307.2)
-
Step 200
200
#E5CEFD
oklch(88.5% 0.068 307.2)
-
Step 300
300
#D6ABFF
oklch(80.9% 0.124 307.3)
-
Step 400
400
#C179FE
oklch(70.7% 0.196 307.1)
-
Step 500
500
#B24BFC
oklch(63% 0.252 307.1)
-
Step 600
600
#9F18EB
oklch(55.6% 0.274 307.4)
-
Step 700
700
#8700CB
oklch(49% 0.252 307.2)
-
Step 800
800
#6E0DA5
oklch(42.7% 0.21 307.3)
-
Step 900
900 (this color)
#591A83
oklch(37.7% 0.164 307.3)
-
Step 950
950
#34124D
oklch(27% 0.105 307.1)
#591A83 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) | #003A86 | 0.128 |
| Deuteranopia (no green cones) | #003C81 | 0.130 |
| Tritanopia (no blue cones) | #52354E | 0.115 |
| Achromatopsia (no color) | #3C3C3C | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #591A83
#591A83
oklch(37.7% 0.164 307.3)
- #334A00
#334A00
oklch(37.6% 0.097 127.1)
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 #591A83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.044
- Royal Purple #4B006E ΔE 0.058
- Rebecca Purple #663399 ΔE 0.065
- Chrysanthemum #560BAD ΔE 0.071
- Imperial Purple #480CA8 ΔE 0.076
- Dark Slate Blue #483D8B ΔE 0.076
- Purple #800080 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.087
Use #591A83 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.