#5B1C66
Closest named color: Grape Purple (#5D1451). oklch(36% 0.134 321.3), rgb(91, 28, 102).
Aa
White text reads best on this color (11.64:1).
About this color
#5B1C66 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.134 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.038 away. White text reads best on it, at 11.64:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #5B1C66 |
| RGB | rgb(91, 28, 102) |
| HSL | hsl(291, 57%, 25%) |
| OKLCH | oklch(36% 0.134 321.3) |
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 #5B1C66 | 11.64:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #5B1C66 | 1.80:1 | Fails | Lc 7.9 | Not readable |
| #5B1C66 text on white | 11.64:1 | AAA | Lc 96.0 | Preferred for body text |
| #5B1C66 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
#FAF3FB
oklch(97.2% 0.013 321.9)
-
Step 100
100
#F3E4F6
oklch(93.6% 0.029 320.6)
-
Step 200
200
#EBCEF0
oklch(88.6% 0.055 321.3)
-
Step 300
300
#DFABE8
oklch(80.9% 0.101 321.4)
-
Step 400
400
#CD7CDC
oklch(70.7% 0.159 321.2)
-
Step 500
500
#BF54D2
oklch(63% 0.205 321.4)
-
Step 600
600
#AB31BF
oklch(55.6% 0.223 321.6)
-
Step 700
700
#9221A5
oklch(49% 0.208 321.3)
-
Step 800
800
#771F86
oklch(42.7% 0.172 321.3)
-
Step 900
900 (this color)
#5B1C66
oklch(36% 0.134 321.3)
-
Step 950
950
#38153F
oklch(27% 0.085 320.7)
#5B1C66 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) | #033468 | 0.136 |
| Deuteranopia (no green cones) | #253B64 | 0.116 |
| Tritanopia (no blue cones) | #5C293E | 0.082 |
| Achromatopsia (no color) | #383838 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1C66
#5B1C66
oklch(36% 0.134 321.3)
- #094B00
#094B00
oklch(36% 0.119 141.3)
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 #5B1C66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.038
- Royal Purple #4B006E ΔE 0.058
- Plum Purple #4E0550 ΔE 0.059
- Rich Purple #720058 ΔE 0.059
- Velvet #750851 ΔE 0.068
- Indigo #4B0082 ΔE 0.073
- Deep Violet #490648 ΔE 0.074
- Purple #800080 ΔE 0.088
Use #5B1C66 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.