#5B1F70
Closest named color: Grape Purple (#5D1451). oklch(37% 0.14 315.9), rgb(91, 31, 112).
Aa
White text reads best on this color (11.20:1).
About this color
#5B1F70 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.140 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.055 away. White text reads best on it, at 11.20:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #5B1F70 |
| RGB | rgb(91, 31, 112) |
| HSL | hsl(284, 57%, 28%) |
| OKLCH | oklch(37% 0.14 315.9) |
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 #5B1F70 | 11.20:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #5B1F70 | 1.87:1 | Fails | Lc 8.8 | Not readable |
| #5B1F70 text on white | 11.20:1 | AAA | Lc 95.1 | Preferred for body text |
| #5B1F70 text on black | 1.87:1 | Fails | Lc -7.5 | 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
#DBACEF
oklch(80.9% 0.105 315.6)
-
Step 400
400
#C87CE6
oklch(70.6% 0.168 315.8)
-
Step 500
500
#BA54DE
oklch(63.1% 0.214 316.2)
-
Step 600
600
#A530CC
oklch(55.5% 0.233 315.9)
-
Step 700
700
#8D20B0
oklch(49% 0.216 315.9)
-
Step 800
800
#731F8F
oklch(42.8% 0.179 315.9)
-
Step 900
900 (this color)
#5B1F70
oklch(37% 0.14 315.9)
-
Step 950
950
#371543
oklch(27.1% 0.089 316.3)
#5B1F70 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) | #003772 | 0.133 |
| Deuteranopia (no green cones) | #1E3D6E | 0.118 |
| Tritanopia (no blue cones) | #5A2F45 | 0.090 |
| Achromatopsia (no color) | #3B3B3B | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1F70
#5B1F70
oklch(37% 0.14 315.9)
- #214C00
#214C00
oklch(37.1% 0.11 136.1)
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 #5B1F70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.055
- Royal Purple #4B006E ΔE 0.058
- Indigo #4B0082 ΔE 0.064
- Rich Purple #720058 ΔE 0.069
- Plum Purple #4E0550 ΔE 0.073
- Velvet #750851 ΔE 0.079
- Rebecca Purple #663399 ΔE 0.080
- Purple #800080 ΔE 0.082
Use #5B1F70 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.