#511198
Closest named color: Imperial Purple (#480CA8). oklch(37.8% 0.191 296.8), rgb(81, 17, 152).
Aa
White text reads best on this color (11.14:1).
About this color
#511198 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.191 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Imperial Purple (#480CA8), ΔE 0.035 away. White text reads best on it, at 11.14:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Imperial Purple (#480CA8) |
| Black text | 1.88:1 |
| White text | 11.14:1 |
Values
| HEX | #511198 |
| RGB | rgb(81, 17, 152) |
| HSL | hsl(268, 80%, 33%) |
| OKLCH | oklch(37.8% 0.191 296.8) |
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 #511198 | 11.14:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #511198 | 1.88:1 | Fails | Lc 9.6 | Not readable |
| #511198 text on white | 11.14:1 | AAA | Lc 94.3 | Preferred for body text |
| #511198 text on black | 1.88:1 | Fails | Lc -8.3 | 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
#F6F3FF
oklch(97% 0.016 297.5)
-
Step 100
100
#ECE6FF
oklch(93.7% 0.034 296.7)
-
Step 200
200
#DDD1FF
oklch(88.5% 0.064 297)
-
Step 300
300
#C8B2FF
oklch(81% 0.109 297)
-
Step 400
400
#AD85FF
oklch(70.7% 0.175 296.8)
-
Step 500
500
#9B5EFF
oklch(63% 0.228 296.8)
-
Step 600
600
#8C23FF
oklch(55.6% 0.282 296.9)
-
Step 700
700
#7800E1
oklch(49.2% 0.267 296.8)
-
Step 800
800
#6200BA
oklch(42.6% 0.232 296.7)
-
Step 900
900 (this color)
#511198
oklch(37.8% 0.191 296.8)
-
Step 950
950
#2F0F59
oklch(27% 0.122 296.9)
#511198 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) | #003C9B | 0.114 |
| Deuteranopia (no green cones) | #003A96 | 0.113 |
| Tritanopia (no blue cones) | #3D3C59 | 0.143 |
| Achromatopsia (no color) | #3B3B3B | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #511198
#511198
oklch(37.8% 0.191 296.8)
- #3F4700
#3F4700
oklch(37.7% 0.087 116.8)
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 #511198, closest first.
No curated palette has a color within ΔE 0.04 of #511198.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Imperial Purple #480CA8 ΔE 0.035
- Chrysanthemum #560BAD ΔE 0.035
- Indigo #4B0082 ΔE 0.044
- Indigo Blue #3A18B1 ΔE 0.065
- Rebecca Purple #663399 ΔE 0.072
- Royal Purple #4B006E ΔE 0.077
- Dark Slate Blue #483D8B ΔE 0.081
- Violet Blue #510AC9 ΔE 0.081
Use #511198 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.