#5B1F76
Closest named color: Royal Purple (#4B006E). oklch(37.4% 0.146 313.2), rgb(91, 31, 118).
Aa
White text reads best on this color (11.03:1).
About this color
#5B1F76 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.146 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.058 away. White text reads best on it, at 11.03:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #5B1F76 |
| RGB | rgb(91, 31, 118) |
| HSL | hsl(281, 58%, 29%) |
| OKLCH | oklch(37.4% 0.146 313.2) |
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 #5B1F76 | 11.03:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #5B1F76 | 1.90:1 | Fails | Lc 9.2 | Not readable |
| #5B1F76 text on white | 11.03:1 | AAA | Lc 94.8 | Preferred for body text |
| #5B1F76 text on black | 1.90:1 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F1E4F9
oklch(93.5% 0.031 312.9)
-
Step 200
200
#E7CEF6
oklch(88.4% 0.06 312.9)
-
Step 300
300
#DAACF3
oklch(81% 0.109 313.4)
-
Step 400
400
#C67BED
oklch(70.6% 0.176 313)
-
Step 500
500
#B753E7
oklch(63.1% 0.223 312.9)
-
Step 600
600
#A32CD5
oklch(55.6% 0.244 313.1)
-
Step 700
700
#8C1BB8
oklch(49.1% 0.226 313.4)
-
Step 800
800
#711C95
oklch(42.7% 0.187 313)
-
Step 900
900 (this color)
#5B1F76
oklch(37.4% 0.146 313.2)
-
Step 950
950
#361446
oklch(27% 0.094 313.2)
#5B1F76 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) | #003979 | 0.131 |
| Deuteranopia (no green cones) | #183D74 | 0.121 |
| Tritanopia (no blue cones) | #583148 | 0.096 |
| Achromatopsia (no color) | #3C3C3C | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B1F76
#5B1F76
oklch(37.4% 0.146 313.2)
- #294C00
#294C00
oklch(37.5% 0.106 133)
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 #5B1F76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.058
- Indigo #4B0082 ΔE 0.058
- Grape Purple #5D1451 ΔE 0.065
- Rebecca Purple #663399 ΔE 0.072
- Rich Purple #720058 ΔE 0.076
- Dark Slate Blue #483D8B ΔE 0.078
- Purple #800080 ΔE 0.080
- Plum Purple #4E0550 ΔE 0.080
Use #5B1F76 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.