#811BC9
Closest named color: Dark Violet (#9400D3). oklch(49% 0.238 304.7), rgb(129, 27, 201).
Aa
White text reads best on this color (7.15:1).
About this color
#811BC9 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.238 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Violet (#9400D3), ΔE 0.040 away. White text reads best on it, at 7.15:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.238) |
| Temperature | in between |
| Nearest name | Dark Violet (#9400D3) |
| Black text | 2.93:1 |
| White text | 7.15:1 |
Values
| HEX | #811BC9 |
| RGB | rgb(129, 27, 201) |
| HSL | hsl(275, 76%, 45%) |
| OKLCH | oklch(49% 0.238 304.7) |
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 #811BC9 | 7.15:1 | AAA | Lc -88.3 | Fine for body text |
| Black text on #811BC9 | 2.93:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #811BC9 text on white | 7.15:1 | AAA | Lc 83.2 | Fine for body text |
| #811BC9 text on black | 2.93:1 | Fails | Lc -18.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EFE5FC
oklch(93.7% 0.032 305.3)
-
Step 200
200
#E2CFFC
oklch(88.4% 0.064 304.3)
-
Step 300
300
#D1AEFD
oklch(80.9% 0.115 304.3)
-
Step 400
400
#BB7EFB
oklch(70.7% 0.183 304.7)
-
Step 500
500
#AB55F9
oklch(63.2% 0.235 304.5)
-
Step 600
600
#972DE7
oklch(55.5% 0.256 304.7)
-
Step 700
700 (this color)
#811BC9
oklch(49% 0.238 304.7)
-
Step 800
800
#691CA3
oklch(42.7% 0.198 304.7)
-
Step 900
900
#552181
oklch(37.7% 0.153 304.7)
-
Step 950
950
#32154C
oklch(27.1% 0.098 304.9)
#811BC9 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) | #0055CD | 0.170 |
| Deuteranopia (no green cones) | #0058C6 | 0.172 |
| Tritanopia (no blue cones) | #734F77 | 0.167 |
| Achromatopsia (no color) | #585858 | 0.240 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #811BC9
#811BC9
oklch(49% 0.238 304.7)
- #516C00
#516C00
oklch(49.2% 0.123 125)
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 #811BC9, closest first.
No curated palette has a color within ΔE 0.04 of #811BC9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Violet #9400D3 ΔE 0.040
- Grape #7209B7 ΔE 0.045
- Blue Violet #8A2BE2 ΔE 0.047
- Dark Orchid #9932CC ΔE 0.059
- Burple #6832E3 ΔE 0.071
- Purple Blue #5D21D0 ΔE 0.074
- Bluey Purple #6241C7 ΔE 0.074
- Purply #983FB2 ΔE 0.083
Use #811BC9 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.