#512173
Closest named color: Royal Purple (#4B006E). oklch(36.1% 0.136 307.8), rgb(81, 33, 115).
Aa
White text reads best on this color (11.57:1).
About this color
#512173 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.136 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.049 away. White text reads best on it, at 11.57:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.81:1 |
| White text | 11.57:1 |
Values
| HEX | #512173 |
| RGB | rgb(81, 33, 115) |
| HSL | hsl(275, 55%, 29%) |
| OKLCH | oklch(36.1% 0.136 307.8) |
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 #512173 | 11.57:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #512173 | 1.81:1 | Fails | Lc 7.9 | Not readable |
| #512173 text on white | 11.57:1 | AAA | Lc 96.0 | Preferred for body text |
| #512173 text on black | 1.81:1 | 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
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#EFE5FA
oklch(93.6% 0.03 307.1)
-
Step 200
200
#E3D0F7
oklch(88.5% 0.057 307.2)
-
Step 300
300
#D3AFF4
oklch(80.9% 0.102 308)
-
Step 400
400
#BD81EE
oklch(70.7% 0.164 308.1)
-
Step 500
500
#AC5CE9
oklch(63.1% 0.21 307.6)
-
Step 600
600
#983BD7
oklch(55.6% 0.228 307.7)
-
Step 700
700
#822BBA
oklch(49.1% 0.211 307.9)
-
Step 800
800
#692697
oklch(42.7% 0.176 307.5)
-
Step 900
900 (this color)
#512173
oklch(36.1% 0.136 307.8)
-
Step 950
950
#321846
oklch(27.1% 0.085 307.8)
#512173 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) | #003775 | 0.113 |
| Deuteranopia (no green cones) | #0E3971 | 0.108 |
| Tritanopia (no blue cones) | #4C3347 | 0.096 |
| Achromatopsia (no color) | #393939 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #512173
#512173
oklch(36.1% 0.136 307.8)
- #2F4600
#2F4600
oklch(36.1% 0.094 127.8)
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 #512173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.049
- Indigo #4B0082 ΔE 0.051
- Grape Purple #5D1451 ΔE 0.067
- Plum Purple #4E0550 ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.074
- Rebecca Purple #663399 ΔE 0.084
- Deep Violet #490648 ΔE 0.087
- Rich Purple #720058 ΔE 0.089
Use #512173 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.