#531B70
Closest named color: Royal Purple (#4B006E). oklch(35.4% 0.142 311.3), rgb(83, 27, 112).
Aa
White text reads best on this color (11.94:1).
About this color
#531B70 is a dark, vivid purple. In OKLCH its lightness is 35%, its chroma 0.142 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.040 away. White text reads best on it, at 11.94:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.75:1 |
| White text | 11.94:1 |
Values
| HEX | #531B70 |
| RGB | rgb(83, 27, 112) |
| HSL | hsl(280, 61%, 27%) |
| OKLCH | oklch(35.4% 0.142 311.3) |
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 #531B70 | 11.94:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #531B70 | 1.75:1 | Fails | Lc 7.3 | Not readable |
| #531B70 text on white | 11.94:1 | AAA | Lc 96.5 | Preferred for body text |
| #531B70 text on black | 1.75:1 | 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
#F9F3FD
oklch(97.2% 0.015 312.2)
-
Step 100
100
#F1E4F9
oklch(93.5% 0.031 312.9)
-
Step 200
200
#E6CFF6
oklch(88.6% 0.058 311.5)
-
Step 300
300
#D7ADF3
oklch(80.9% 0.106 311.4)
-
Step 400
400
#C37EED
oklch(70.8% 0.17 311.4)
-
Step 500
500
#B356E7
oklch(63% 0.218 311.2)
-
Step 600
600
#9F33D5
oklch(55.6% 0.236 311.3)
-
Step 700
700
#8822B9
oklch(49.1% 0.22 311.2)
-
Step 800
800
#6E2095
oklch(42.6% 0.182 311.2)
-
Step 900
900 (this color)
#531B70
oklch(35.4% 0.142 311.3)
-
Step 950
950
#341646
oklch(27% 0.09 310.6)
#531B70 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) | #003472 | 0.122 |
| Deuteranopia (no green cones) | #0E386E | 0.118 |
| Tritanopia (no blue cones) | #4F2E44 | 0.095 |
| Achromatopsia (no color) | #373737 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #531B70
#531B70
oklch(35.4% 0.142 311.3)
- #284500
#284500
oklch(35.4% 0.097 131.4)
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 #531B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.040
- Indigo #4B0082 ΔE 0.048
- Grape Purple #5D1451 ΔE 0.060
- Plum Purple #4E0550 ΔE 0.064
- Deep Violet #490648 ΔE 0.079
- Rich Purple #720058 ΔE 0.082
- Dark Slate Blue #483D8B ΔE 0.086
- Rebecca Purple #663399 ΔE 0.091
Use #531B70 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.